diff --git a/testkit-backend/pom.xml b/testkit-backend/pom.xml
index 20d42658ed..d7fb8f9ae2 100644
--- a/testkit-backend/pom.xml
+++ b/testkit-backend/pom.xml
@@ -61,7 +61,10 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <configuration>
-                    <compilerArgs combine.self="override"/>
+                    <compilerArgs combine.self="override">
+                        <arg>-Xlint:all,-processing</arg>
+                        <arg>-Werror</arg>
+                    </compilerArgs>
                 </configuration>
             </plugin>
             <plugin>
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/CustomDriverError.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/CustomDriverError.java
index 652d66fd4b..17cb576f33 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/CustomDriverError.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/CustomDriverError.java
@@ -18,7 +18,12 @@
  */
 package neo4j.org.testkit.backend;
 
+import java.io.Serial;
+
 public class CustomDriverError extends RuntimeException {
+    @Serial
+    private static final long serialVersionUID = 2979071989786663535L;
+
     public CustomDriverError(Throwable cause) {
         super(cause);
     }
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/FrontendError.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/FrontendError.java
index bf8b1b9594..63ca3c2bc9 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/FrontendError.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/FrontendError.java
@@ -18,4 +18,9 @@
  */
 package neo4j.org.testkit.backend;
 
-public class FrontendError extends RuntimeException {}
+import java.io.Serial;
+
+public class FrontendError extends RuntimeException {
+    @Serial
+    private static final long serialVersionUID = -8369933385092563391L;
+}
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/holder/RxResultHolder.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/holder/RxResultHolder.java
index 1fe61d249e..db7e34e7bf 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/holder/RxResultHolder.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/holder/RxResultHolder.java
@@ -26,6 +26,7 @@
 import org.neo4j.driver.Record;
 import org.neo4j.driver.reactive.RxResult;
 
+@SuppressWarnings("deprecation")
 public class RxResultHolder extends AbstractResultHolder<RxSessionHolder, RxTransactionHolder, RxResult> {
     @Setter
     private RxBufferedSubscriber<Record> subscriber;
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/holder/RxSessionHolder.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/holder/RxSessionHolder.java
index 2156a153dc..ad64081d58 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/holder/RxSessionHolder.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/holder/RxSessionHolder.java
@@ -21,6 +21,7 @@
 import org.neo4j.driver.SessionConfig;
 import org.neo4j.driver.reactive.RxSession;
 
+@SuppressWarnings("deprecation")
 public class RxSessionHolder extends AbstractSessionHolder<RxSession> {
     public RxSessionHolder(DriverHolder driverHolder, RxSession session, SessionConfig config) {
         super(driverHolder, session, config);
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/holder/RxTransactionHolder.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/holder/RxTransactionHolder.java
index fe36e926d4..d2e55397da 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/holder/RxTransactionHolder.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/holder/RxTransactionHolder.java
@@ -20,6 +20,7 @@
 
 import org.neo4j.driver.reactive.RxTransaction;
 
+@SuppressWarnings("deprecation")
 public class RxTransactionHolder extends AbstractTransactionHolder<RxSessionHolder, RxTransaction> {
     public RxTransactionHolder(RxSessionHolder sessionHolder, RxTransaction transaction) {
         super(sessionHolder, transaction);
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/TestkitModule.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/TestkitModule.java
index 26b1880ba5..c31f72774e 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/TestkitModule.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/TestkitModule.java
@@ -19,6 +19,7 @@
 package neo4j.org.testkit.backend.messages;
 
 import com.fasterxml.jackson.databind.module.SimpleModule;
+import java.io.Serial;
 import java.time.LocalDate;
 import java.util.List;
 import neo4j.org.testkit.backend.messages.requests.deserializer.TestkitCypherDateDeserializer;
@@ -57,6 +58,9 @@
 import org.neo4j.driver.types.IsoDuration;
 
 public class TestkitModule extends SimpleModule {
+    @Serial
+    private static final long serialVersionUID = 7051732358423895087L;
+
     public TestkitModule() {
         this.addDeserializer(List.class, new TestkitListDeserializer());
         this.addDeserializer(CypherDateTime.class, new TestkitCypherDateTimeDeserializer());
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/NewSession.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/NewSession.java
index 8078c1b033..1c25738381 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/NewSession.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/NewSession.java
@@ -105,6 +105,7 @@ private AsyncSessionHolder createAsyncSessionState(DriverHolder driverHolder, Se
                 driverHolder, driverHolder.getDriver().asyncSession(sessionConfig), sessionConfig);
     }
 
+    @SuppressWarnings("deprecation")
     private RxSessionHolder createRxSessionState(DriverHolder driverHolder, SessionConfig sessionConfig) {
         return new RxSessionHolder(driverHolder, driverHolder.getDriver().rxSession(sessionConfig), sessionConfig);
     }
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionBeginTransaction.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionBeginTransaction.java
index 264797edd7..608a273814 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionBeginTransaction.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionBeginTransaction.java
@@ -88,6 +88,7 @@ public CompletionStage<TestkitResponse> processAsync(TestkitState testkitState)
     }
 
     @Override
+    @SuppressWarnings("deprecation")
     public Mono<TestkitResponse> processRx(TestkitState testkitState) {
         return testkitState.getRxSessionHolder(data.getSessionId()).flatMap(sessionHolder -> {
             RxSession session = sessionHolder.getSession();
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionLastBookmarks.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionLastBookmarks.java
index 50e42c8d81..e1a5d8ecca 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionLastBookmarks.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionLastBookmarks.java
@@ -50,6 +50,7 @@ public CompletionStage<TestkitResponse> processAsync(TestkitState testkitState)
     }
 
     @Override
+    @SuppressWarnings("deprecation")
     public Mono<TestkitResponse> processRx(TestkitState testkitState) {
         return testkitState
                 .getRxSessionHolder(data.getSessionId())
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionReadTransaction.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionReadTransaction.java
index 0203edf84a..13a00fd509 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionReadTransaction.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionReadTransaction.java
@@ -48,6 +48,7 @@ public class SessionReadTransaction implements TestkitRequest {
     private SessionReadTransactionBody data;
 
     @Override
+    @SuppressWarnings("deprecation")
     public TestkitResponse process(TestkitState testkitState) {
         SessionHolder sessionHolder = testkitState.getSessionHolder(data.getSessionId());
         Session session = sessionHolder.getSession();
@@ -56,6 +57,7 @@ public TestkitResponse process(TestkitState testkitState) {
     }
 
     @Override
+    @SuppressWarnings("deprecation")
     public CompletionStage<TestkitResponse> processAsync(TestkitState testkitState) {
         return testkitState
                 .getAsyncSessionHolder(data.getSessionId())
@@ -77,6 +79,7 @@ public CompletionStage<TestkitResponse> processAsync(TestkitState testkitState)
     }
 
     @Override
+    @SuppressWarnings("deprecation")
     public Mono<TestkitResponse> processRx(TestkitState testkitState) {
         return testkitState
                 .getRxSessionHolder(data.getSessionId())
@@ -113,6 +116,7 @@ public Mono<TestkitResponse> processReactive(TestkitState testkitState) {
                 .then(Mono.just(retryableDone()));
     }
 
+    @SuppressWarnings("deprecation")
     private TransactionWork<Void> handle(TestkitState testkitState, SessionHolder sessionHolder) {
         return tx -> {
             String txId = testkitState.addTransactionHolder(new TransactionHolder(sessionHolder, tx));
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionRun.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionRun.java
index 88857ed1ba..8624fd3e39 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionRun.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionRun.java
@@ -99,6 +99,7 @@ public CompletionStage<TestkitResponse> processAsync(TestkitState testkitState)
     }
 
     @Override
+    @SuppressWarnings("deprecation")
     public Mono<TestkitResponse> processRx(TestkitState testkitState) {
         return testkitState.getRxSessionHolder(data.getSessionId()).flatMap(sessionHolder -> {
             RxSession session = sessionHolder.getSession();
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionWriteTransaction.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionWriteTransaction.java
index 50803689fc..6effd93b95 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionWriteTransaction.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/SessionWriteTransaction.java
@@ -49,6 +49,7 @@ public class SessionWriteTransaction implements TestkitRequest {
     private SessionWriteTransactionBody data;
 
     @Override
+    @SuppressWarnings("deprecation")
     public TestkitResponse process(TestkitState testkitState) {
         SessionHolder sessionHolder = testkitState.getSessionHolder(data.getSessionId());
         Session session = sessionHolder.getSession();
@@ -57,6 +58,7 @@ public TestkitResponse process(TestkitState testkitState) {
     }
 
     @Override
+    @SuppressWarnings("deprecation")
     public CompletionStage<TestkitResponse> processAsync(TestkitState testkitState) {
         return testkitState
                 .getAsyncSessionHolder(data.getSessionId())
@@ -78,6 +80,7 @@ public CompletionStage<TestkitResponse> processAsync(TestkitState testkitState)
     }
 
     @Override
+    @SuppressWarnings("deprecation")
     public Mono<TestkitResponse> processRx(TestkitState testkitState) {
         return testkitState
                 .getRxSessionHolder(data.getSessionId())
@@ -114,6 +117,7 @@ public Mono<TestkitResponse> processReactive(TestkitState testkitState) {
                 .then(Mono.just(retryableDone()));
     }
 
+    @SuppressWarnings("deprecation")
     private TransactionWork<Void> handle(TestkitState testkitState, SessionHolder sessionHolder) {
         return tx -> {
             String txId = testkitState.addTransactionHolder(new TransactionHolder(sessionHolder, tx));
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/TransactionClose.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/TransactionClose.java
index 7432944971..8a75db4f10 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/TransactionClose.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/TransactionClose.java
@@ -49,6 +49,7 @@ public CompletionStage<TestkitResponse> processAsync(TestkitState testkitState)
     }
 
     @Override
+    @SuppressWarnings("deprecation")
     public Mono<TestkitResponse> processRx(TestkitState testkitState) {
         return testkitState
                 .getRxTransactionHolder(data.getTxId())
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/TransactionRun.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/TransactionRun.java
index 9617d8af5e..b7d07c4fb7 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/TransactionRun.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/TransactionRun.java
@@ -66,6 +66,7 @@ public CompletionStage<TestkitResponse> processAsync(TestkitState testkitState)
     }
 
     @Override
+    @SuppressWarnings("deprecation")
     public Mono<TestkitResponse> processRx(TestkitState testkitState) {
         return testkitState.getRxTransactionHolder(data.getTxId()).flatMap(transactionHolder -> {
             RxResult result = transactionHolder
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherDateDeserializer.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherDateDeserializer.java
index 7d4247f7ef..c4a37329e8 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherDateDeserializer.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherDateDeserializer.java
@@ -23,11 +23,15 @@
 import com.fasterxml.jackson.databind.DeserializationContext;
 import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
 import java.io.IOException;
+import java.io.Serial;
 import java.time.LocalDate;
 import java.util.Date;
 
 public class TestkitCypherDateDeserializer extends StdDeserializer<LocalDate> {
 
+    @Serial
+    private static final long serialVersionUID = 3489940766207129614L;
+
     private final TestkitCypherTypeMapper mapper;
 
     public TestkitCypherDateDeserializer() {
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherDateTimeDeserializer.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherDateTimeDeserializer.java
index 97e59e7210..936592ad90 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherDateTimeDeserializer.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherDateTimeDeserializer.java
@@ -23,9 +23,13 @@
 import com.fasterxml.jackson.databind.DeserializationContext;
 import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
 import java.io.IOException;
+import java.io.Serial;
 import neo4j.org.testkit.backend.messages.requests.deserializer.types.CypherDateTime;
 
 public class TestkitCypherDateTimeDeserializer extends StdDeserializer<CypherDateTime> {
+    @Serial
+    private static final long serialVersionUID = 8980981682742682436L;
+
     private final TestkitCypherTypeMapper mapper;
 
     public TestkitCypherDateTimeDeserializer() {
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherDurationDeserializer.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherDurationDeserializer.java
index b1d7fb49bf..30d9fe32bf 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherDurationDeserializer.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherDurationDeserializer.java
@@ -23,10 +23,14 @@
 import com.fasterxml.jackson.databind.DeserializationContext;
 import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
 import java.io.IOException;
+import java.io.Serial;
 import org.neo4j.driver.internal.InternalIsoDuration;
 import org.neo4j.driver.types.IsoDuration;
 
 public class TestkitCypherDurationDeserializer extends StdDeserializer<IsoDuration> {
+    @Serial
+    private static final long serialVersionUID = 3128342779161014747L;
+
     private final TestkitCypherTypeMapper mapper;
 
     public TestkitCypherDurationDeserializer() {
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherParamDeserializer.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherParamDeserializer.java
index b5740d0db0..92e2d9eb49 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherParamDeserializer.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherParamDeserializer.java
@@ -26,12 +26,16 @@
 import com.fasterxml.jackson.databind.DeserializationContext;
 import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
 import java.io.IOException;
+import java.io.Serial;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
 import neo4j.org.testkit.backend.messages.requests.deserializer.types.CypherType;
 
 public class TestkitCypherParamDeserializer extends StdDeserializer<Map<String, Object>> {
+    @Serial
+    private static final long serialVersionUID = -3239342714470961079L;
+
     public TestkitCypherParamDeserializer() {
         super(Map.class);
     }
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherTimeDeserializer.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherTimeDeserializer.java
index 1717568b5c..4c8f6b07f1 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherTimeDeserializer.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitCypherTimeDeserializer.java
@@ -23,9 +23,13 @@
 import com.fasterxml.jackson.databind.DeserializationContext;
 import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
 import java.io.IOException;
+import java.io.Serial;
 import neo4j.org.testkit.backend.messages.requests.deserializer.types.CypherTime;
 
 public class TestkitCypherTimeDeserializer extends StdDeserializer<CypherTime> {
+    @Serial
+    private static final long serialVersionUID = 8354352358618500970L;
+
     private final TestkitCypherTypeMapper mapper;
 
     public TestkitCypherTimeDeserializer() {
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitListDeserializer.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitListDeserializer.java
index e5dacda40b..4f412a28b6 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitListDeserializer.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/requests/deserializer/TestkitListDeserializer.java
@@ -26,11 +26,15 @@
 import com.fasterxml.jackson.databind.DeserializationContext;
 import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
 import java.io.IOException;
+import java.io.Serial;
 import java.util.ArrayList;
 import java.util.List;
 import neo4j.org.testkit.backend.messages.requests.deserializer.types.CypherType;
 
 public class TestkitListDeserializer extends StdDeserializer<List<?>> {
+    @Serial
+    private static final long serialVersionUID = -1878499456593526741L;
+
     private final TestkitCypherParamDeserializer mapDeserializer;
 
     public TestkitListDeserializer() {
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitDateTimeValueSerializer.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitDateTimeValueSerializer.java
index c40fef3fd5..80f422e1e6 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitDateTimeValueSerializer.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitDateTimeValueSerializer.java
@@ -24,12 +24,16 @@
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 import java.io.IOException;
+import java.io.Serial;
 import java.time.ZoneId;
 import java.time.ZoneOffset;
 import java.time.ZonedDateTime;
 import org.neo4j.driver.internal.value.DateTimeValue;
 
 public class TestkitDateTimeValueSerializer extends StdSerializer<DateTimeValue> {
+    @Serial
+    private static final long serialVersionUID = 819438767898259613L;
+
     public TestkitDateTimeValueSerializer() {
         super(DateTimeValue.class);
     }
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitDateValueSerializer.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitDateValueSerializer.java
index 32c9f297fc..7453177776 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitDateValueSerializer.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitDateValueSerializer.java
@@ -24,10 +24,14 @@
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 import java.io.IOException;
+import java.io.Serial;
 import java.time.LocalDate;
 import org.neo4j.driver.internal.value.DateValue;
 
 public class TestkitDateValueSerializer extends StdSerializer<DateValue> {
+    @Serial
+    private static final long serialVersionUID = 6317556585191107633L;
+
     public TestkitDateValueSerializer() {
         super(DateValue.class);
     }
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitDurationValueSerializer.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitDurationValueSerializer.java
index 23df07f2a4..61198bccea 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitDurationValueSerializer.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitDurationValueSerializer.java
@@ -24,10 +24,14 @@
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 import java.io.IOException;
+import java.io.Serial;
 import org.neo4j.driver.internal.value.DurationValue;
 import org.neo4j.driver.types.IsoDuration;
 
 public class TestkitDurationValueSerializer extends StdSerializer<DurationValue> {
+    @Serial
+    private static final long serialVersionUID = -4371898769147355036L;
+
     public TestkitDurationValueSerializer() {
         super(DurationValue.class);
     }
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitListValueSerializer.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitListValueSerializer.java
index 31d8c96e08..86a1472726 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitListValueSerializer.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitListValueSerializer.java
@@ -25,10 +25,14 @@
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 import java.io.IOException;
+import java.io.Serial;
 import java.util.function.Function;
 import org.neo4j.driver.internal.value.ListValue;
 
 public class TestkitListValueSerializer extends StdSerializer<ListValue> {
+    @Serial
+    private static final long serialVersionUID = -5564826952797323279L;
+
     public TestkitListValueSerializer() {
         super(ListValue.class);
     }
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitLocalDateTimeValueSerializer.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitLocalDateTimeValueSerializer.java
index edf52f8292..d4168fae15 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitLocalDateTimeValueSerializer.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitLocalDateTimeValueSerializer.java
@@ -24,10 +24,14 @@
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 import java.io.IOException;
+import java.io.Serial;
 import java.time.LocalDateTime;
 import org.neo4j.driver.internal.value.LocalDateTimeValue;
 
 public class TestkitLocalDateTimeValueSerializer extends StdSerializer<LocalDateTimeValue> {
+    @Serial
+    private static final long serialVersionUID = 8864167921883077348L;
+
     public TestkitLocalDateTimeValueSerializer() {
         super(LocalDateTimeValue.class);
     }
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitLocalTimeValueSerializer.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitLocalTimeValueSerializer.java
index 84a6e9f4a7..6ed7d43d26 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitLocalTimeValueSerializer.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitLocalTimeValueSerializer.java
@@ -24,10 +24,14 @@
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 import java.io.IOException;
+import java.io.Serial;
 import java.time.LocalTime;
 import org.neo4j.driver.internal.value.LocalTimeValue;
 
 public class TestkitLocalTimeValueSerializer extends StdSerializer<LocalTimeValue> {
+    @Serial
+    private static final long serialVersionUID = -3712440793854179552L;
+
     public TestkitLocalTimeValueSerializer() {
         super(LocalTimeValue.class);
     }
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitMapValueSerializer.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitMapValueSerializer.java
index b9487563d7..c4c4d88fa0 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitMapValueSerializer.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitMapValueSerializer.java
@@ -25,12 +25,16 @@
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 import java.io.IOException;
+import java.io.Serial;
 import java.util.Map;
 import java.util.function.Function;
 import org.neo4j.driver.Value;
 import org.neo4j.driver.internal.value.MapValue;
 
 public class TestkitMapValueSerializer extends StdSerializer<MapValue> {
+    @Serial
+    private static final long serialVersionUID = 3405706388191274032L;
+
     public TestkitMapValueSerializer() {
         super(MapValue.class);
     }
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitNodeValueSerializer.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitNodeValueSerializer.java
index 595fc6c62f..1c1ce64bb3 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitNodeValueSerializer.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitNodeValueSerializer.java
@@ -24,6 +24,7 @@
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 import java.io.IOException;
+import java.io.Serial;
 import java.util.function.Function;
 import java.util.function.Supplier;
 import java.util.stream.StreamSupport;
@@ -35,11 +36,15 @@
 import org.neo4j.driver.types.Node;
 
 public class TestkitNodeValueSerializer extends StdSerializer<NodeValue> {
+    @Serial
+    private static final long serialVersionUID = 5456264010641357998L;
+
     public TestkitNodeValueSerializer() {
         super(NodeValue.class);
     }
 
     @Override
+    @SuppressWarnings("deprecation")
     public void serialize(NodeValue nodeValue, JsonGenerator gen, SerializerProvider serializerProvider)
             throws IOException {
 
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitPathValueSerializer.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitPathValueSerializer.java
index 3918ea8d52..30fe5e1c95 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitPathValueSerializer.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitPathValueSerializer.java
@@ -24,6 +24,7 @@
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 import java.io.IOException;
+import java.io.Serial;
 import java.util.stream.StreamSupport;
 import org.neo4j.driver.internal.value.ListValue;
 import org.neo4j.driver.internal.value.NodeValue;
@@ -32,6 +33,9 @@
 import org.neo4j.driver.types.Path;
 
 public class TestkitPathValueSerializer extends StdSerializer<PathValue> {
+    @Serial
+    private static final long serialVersionUID = -6937949051813143300L;
+
     public TestkitPathValueSerializer() {
         super(PathValue.class);
     }
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitRecordSerializer.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitRecordSerializer.java
index 356ecd2813..727d52c447 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitRecordSerializer.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitRecordSerializer.java
@@ -24,10 +24,14 @@
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 import java.io.IOException;
+import java.io.Serial;
 import org.neo4j.driver.Record;
 
 public class TestkitRecordSerializer extends StdSerializer<org.neo4j.driver.Record> {
 
+    @Serial
+    private static final long serialVersionUID = 5412627390969023151L;
+
     public TestkitRecordSerializer() {
         super(org.neo4j.driver.Record.class);
     }
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitRelationshipValueSerializer.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitRelationshipValueSerializer.java
index 9c1c2ad05f..0599bf1c21 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitRelationshipValueSerializer.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitRelationshipValueSerializer.java
@@ -24,6 +24,7 @@
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 import java.io.IOException;
+import java.io.Serial;
 import java.util.function.Function;
 import java.util.function.Supplier;
 import org.neo4j.driver.internal.value.IntegerValue;
@@ -33,11 +34,15 @@
 import org.neo4j.driver.types.Relationship;
 
 public class TestkitRelationshipValueSerializer extends StdSerializer<RelationshipValue> {
+    @Serial
+    private static final long serialVersionUID = 7011005216175127691L;
+
     public TestkitRelationshipValueSerializer() {
         super(RelationshipValue.class);
     }
 
     @Override
+    @SuppressWarnings("deprecation")
     public void serialize(RelationshipValue relationshipValue, JsonGenerator gen, SerializerProvider provider)
             throws IOException {
         cypherObject(gen, "Relationship", () -> {
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitTimeValueSerializer.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitTimeValueSerializer.java
index 46fe0d21c0..d8bd5b2403 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitTimeValueSerializer.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitTimeValueSerializer.java
@@ -24,10 +24,14 @@
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 import java.io.IOException;
+import java.io.Serial;
 import java.time.OffsetTime;
 import org.neo4j.driver.internal.value.TimeValue;
 
 public class TestkitTimeValueSerializer extends StdSerializer<TimeValue> {
+    @Serial
+    private static final long serialVersionUID = 9147804953543296762L;
+
     public TestkitTimeValueSerializer() {
         super(TimeValue.class);
     }
diff --git a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitValueSerializer.java b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitValueSerializer.java
index 91d8633d39..5dc1e3ba3d 100644
--- a/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitValueSerializer.java
+++ b/testkit-backend/src/main/java/neo4j/org/testkit/backend/messages/responses/serializer/TestkitValueSerializer.java
@@ -24,10 +24,14 @@
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;
 import java.io.IOException;
+import java.io.Serial;
 import org.neo4j.driver.Value;
 import org.neo4j.driver.internal.types.InternalTypeSystem;
 
 public class TestkitValueSerializer extends StdSerializer<Value> {
+    @Serial
+    private static final long serialVersionUID = 6125358719511809365L;
+
     public TestkitValueSerializer() {
         super(Value.class);
     }