diff --git a/NOTICE.md b/NOTICE.md
index 6a4c169dd4..56231f8752 100644
--- a/NOTICE.md
+++ b/NOTICE.md
@@ -70,7 +70,7 @@ Javassist Version 3.30.2-GA
 * Project: http://www.javassist.org/
 * Copyright (C) 1999- Shigeru Chiba. All Rights Reserved.
 
-Jackson JAX-RS Providers Version 2.17.0
+Jackson JAX-RS Providers Version 2.17.1
 * License: Apache License, 2.0
 * Project: https://github.com/FasterXML/jackson-jaxrs-providers
 * Copyright: (c) 2009-2024 FasterXML, LLC. All rights reserved unless otherwise indicated.
diff --git a/examples/NOTICE.md b/examples/NOTICE.md
index 3e1e8f8f92..5724485fbf 100644
--- a/examples/NOTICE.md
+++ b/examples/NOTICE.md
@@ -66,7 +66,7 @@ Javassist Version 3.30.2-GA
 * Project: http://www.javassist.org/
 * Copyright (C) 1999- Shigeru Chiba. All Rights Reserved.
 
-Jackson JAX-RS Providers Version 2.17.0
+Jackson JAX-RS Providers Version 2.17.1
 * License: Apache License, 2.0
 * Project: https://github.com/FasterXML/jackson-jaxrs-providers
 * Copyright: (c) 2009-2023 FasterXML, LLC. All rights reserved unless otherwise indicated.
diff --git a/media/json-jackson/src/main/java/org/glassfish/jersey/jackson/internal/jackson/jaxrs/cfg/MapperConfiguratorBase.java b/media/json-jackson/src/main/java/org/glassfish/jersey/jackson/internal/jackson/jaxrs/cfg/MapperConfiguratorBase.java
index 75bc66eec7..bc280ccbfb 100644
--- a/media/json-jackson/src/main/java/org/glassfish/jersey/jackson/internal/jackson/jaxrs/cfg/MapperConfiguratorBase.java
+++ b/media/json-jackson/src/main/java/org/glassfish/jersey/jackson/internal/jackson/jaxrs/cfg/MapperConfiguratorBase.java
@@ -13,8 +13,8 @@
  * well as accessing it.
  */
 public abstract class MapperConfiguratorBase<IMPL extends MapperConfiguratorBase<IMPL,MAPPER>,
-    MAPPER extends ObjectMapper
->
+        MAPPER extends ObjectMapper
+        >
 {
     /**
      * Mapper provider was constructed with if any, or that was constructed
@@ -22,7 +22,7 @@ public abstract class MapperConfiguratorBase<IMPL extends MapperConfiguratorBase
      * If defined (explicitly or implicitly) it will be used, instead
      * of using provider-based lookup.
      */
-    protected MAPPER _mapper;
+    protected volatile MAPPER _mapper;
 
     /**
      * If no mapper was specified when constructed, and no configuration
@@ -30,14 +30,14 @@ public abstract class MapperConfiguratorBase<IMPL extends MapperConfiguratorBase
      * between default mapper and regular one is that default mapper
      * is only used if no mapper is found via provider lookup.
      */
-    protected MAPPER _defaultMapper;
+    protected volatile MAPPER _defaultMapper;
 
     /**
      * Annotations set to use by default; overridden by explicit call
-     * to {@link #setAnnotationsToUse}
+     * to {@link #setAnnotationsToUse}. Marked final in v2.17.1.
      */
-    protected Annotations[] _defaultAnnotationsToUse;
-    
+    protected final Annotations[] _defaultAnnotationsToUse;
+
     /**
      * To support optional dependency to Jackson JAXB annotations module
      * (needed iff JAXB annotations are used for configuration)
@@ -49,7 +49,7 @@ public abstract class MapperConfiguratorBase<IMPL extends MapperConfiguratorBase
     /* Construction
     /**********************************************************
      */
-    
+
     public MapperConfiguratorBase(MAPPER mapper, Annotations[] defaultAnnotations)
     {
         _mapper = mapper;
@@ -61,7 +61,7 @@ public MapperConfiguratorBase(MAPPER mapper, Annotations[] defaultAnnotations)
     /* Abstract methods to implement
     /***********************************************************
      */
-    
+
     /**
      * Method that locates, configures and returns {@link ObjectMapper} to use
      */
@@ -84,27 +84,27 @@ public MapperConfiguratorBase(MAPPER mapper, Annotations[] defaultAnnotations)
     /***********************************************************
      */
 
-    public synchronized final void setMapper(MAPPER m) {
+    public final void setMapper(MAPPER m) {
         _mapper = m;
     }
 
-    public synchronized final void setAnnotationsToUse(Annotations[] annotationsToUse) {
+    public final void setAnnotationsToUse(Annotations[] annotationsToUse) {
         _setAnnotations(mapper(), annotationsToUse);
     }
 
-    public synchronized final void configure(DeserializationFeature f, boolean state) {
+    public final void configure(DeserializationFeature f, boolean state) {
         mapper().configure(f, state);
     }
 
-    public synchronized final void configure(SerializationFeature f, boolean state) {
+    public final void configure(SerializationFeature f, boolean state) {
         mapper().configure(f, state);
     }
 
-    public synchronized final void configure(JsonParser.Feature f, boolean state) {
+    public final void configure(JsonParser.Feature f, boolean state) {
         mapper().configure(f, state);
     }
 
-    public synchronized final void configure(JsonGenerator.Feature f, boolean state) {
+    public final void configure(JsonGenerator.Feature f, boolean state) {
         mapper().configure(f, state);
     }
 
diff --git a/media/json-jackson/src/main/java/org/glassfish/jersey/jackson/internal/jackson/jaxrs/json/JsonMapperConfigurator.java b/media/json-jackson/src/main/java/org/glassfish/jersey/jackson/internal/jackson/jaxrs/json/JsonMapperConfigurator.java
index 3e9c770c25..8e8091a200 100644
--- a/media/json-jackson/src/main/java/org/glassfish/jersey/jackson/internal/jackson/jaxrs/json/JsonMapperConfigurator.java
+++ b/media/json-jackson/src/main/java/org/glassfish/jersey/jackson/internal/jackson/jaxrs/json/JsonMapperConfigurator.java
@@ -1,6 +1,7 @@
 package org.glassfish.jersey.jackson.internal.jackson.jaxrs.json;
 
 import java.util.ArrayList;
+import java.util.concurrent.locks.ReentrantLock;
 
 import org.glassfish.jersey.jackson.internal.jackson.jaxrs.cfg.Annotations;
 import org.glassfish.jersey.jackson.internal.jackson.jaxrs.cfg.MapperConfiguratorBase;
@@ -16,14 +17,17 @@
  * well as accessing it.
  */
 public class JsonMapperConfigurator
-    extends MapperConfiguratorBase<JsonMapperConfigurator, ObjectMapper>
+        extends MapperConfiguratorBase<JsonMapperConfigurator, ObjectMapper>
 {
+    // @since 2.17.1
+    private final ReentrantLock _lock = new ReentrantLock();
+
     /*
     /**********************************************************
     /* Construction
     /**********************************************************
      */
-    
+
     public JsonMapperConfigurator(ObjectMapper mapper, Annotations[] defAnnotations)
     {
         super(mapper, defAnnotations);
@@ -33,18 +37,24 @@ public JsonMapperConfigurator(ObjectMapper mapper, Annotations[] defAnnotations)
      * Method that locates, configures and returns {@link ObjectMapper} to use
      */
     @Override
-    public synchronized ObjectMapper getConfiguredMapper() {
-        /* important: should NOT call mapper(); needs to return null
-         * if no instance has been passed or constructed
-         */
+    public ObjectMapper getConfiguredMapper() {
+        // important: should NOT call mapper(); needs to return null
+        // if no instance has been passed or constructed
         return _mapper;
     }
 
     @Override
-    public synchronized ObjectMapper getDefaultMapper() {
+    public ObjectMapper getDefaultMapper() {
         if (_defaultMapper == null) {
-            _defaultMapper = new ObjectMapper();
-            _setAnnotations(_defaultMapper, _defaultAnnotationsToUse);
+            _lock.lock();
+            try {
+                if (_defaultMapper == null) {
+                    _defaultMapper = new ObjectMapper();
+                    _setAnnotations(_defaultMapper, _defaultAnnotationsToUse);
+                }
+            } finally {
+                _lock.unlock();
+            }
         }
         return _defaultMapper;
     }
@@ -64,8 +74,15 @@ public synchronized ObjectMapper getDefaultMapper() {
     protected ObjectMapper mapper()
     {
         if (_mapper == null) {
-            _mapper = new ObjectMapper();
-            _setAnnotations(_mapper, _defaultAnnotationsToUse);
+            _lock.lock();
+            try {
+                if (_mapper == null) {
+                    _mapper = new ObjectMapper();
+                    _setAnnotations(_mapper, _defaultAnnotationsToUse);
+                }
+            } finally {
+                _lock.unlock();
+            }
         }
         return _mapper;
     }
@@ -100,22 +117,22 @@ protected AnnotationIntrospector _resolveIntrospectors(Annotations[] annotations
     protected AnnotationIntrospector _resolveIntrospector(Annotations ann)
     {
         switch (ann) {
-        case JACKSON:
-            return new JacksonAnnotationIntrospector();
-        case JAXB:
-            /* For this, need to use indirection just so that error occurs
-             * when we get here, and not when this class is being loaded
-             */
-            try {
-                if (_jaxbIntrospectorClass == null) {
-                    _jaxbIntrospectorClass = JaxbAnnotationIntrospector.class;
+            case JACKSON:
+                return new JacksonAnnotationIntrospector();
+            case JAXB:
+                /* For this, need to use indirection just so that error occurs
+                 * when we get here, and not when this class is being loaded
+                 */
+                try {
+                    if (_jaxbIntrospectorClass == null) {
+                        _jaxbIntrospectorClass = JaxbAnnotationIntrospector.class;
+                    }
+                    return _jaxbIntrospectorClass.newInstance();
+                } catch (Exception e) {
+                    throw new IllegalStateException("Failed to instantiate JaxbAnnotationIntrospector: "+e.getMessage(), e);
                 }
-                return _jaxbIntrospectorClass.newInstance();
-            } catch (Exception e) {
-                throw new IllegalStateException("Failed to instantiate JaxbAnnotationIntrospector: "+e.getMessage(), e);
-            }
-        default:
-            throw new IllegalStateException(); 
+            default:
+                throw new IllegalStateException();
         }
     }
 }
diff --git a/media/json-jackson/src/main/java/org/glassfish/jersey/jackson/internal/jackson/jaxrs/json/PackageVersion.java b/media/json-jackson/src/main/java/org/glassfish/jersey/jackson/internal/jackson/jaxrs/json/PackageVersion.java
index 88e31680b8..5d328da992 100644
--- a/media/json-jackson/src/main/java/org/glassfish/jersey/jackson/internal/jackson/jaxrs/json/PackageVersion.java
+++ b/media/json-jackson/src/main/java/org/glassfish/jersey/jackson/internal/jackson/jaxrs/json/PackageVersion.java
@@ -11,7 +11,7 @@
  */
 public final class PackageVersion implements Versioned {
     public final static Version VERSION = VersionUtil.parseVersion(
-        "2.17.0", "com.fasterxml.jackson.jaxrs", "jackson-jaxrs-json-provider");
+        "2.17.1", "com.fasterxml.jackson.jaxrs", "jackson-jaxrs-json-provider");
 
     @Override
     public Version version() {
diff --git a/media/json-jackson/src/main/resources/META-INF/NOTICE.markdown b/media/json-jackson/src/main/resources/META-INF/NOTICE.markdown
index 6034c04d7c..4edecfc595 100644
--- a/media/json-jackson/src/main/resources/META-INF/NOTICE.markdown
+++ b/media/json-jackson/src/main/resources/META-INF/NOTICE.markdown
@@ -31,7 +31,7 @@ The project maintains the following source code repositories:
 
 ## Third-party Content
 
-Jackson JAX-RS Providers version 2.17.0
+Jackson JAX-RS Providers version 2.17.1
 * License: Apache License, 2.0
 * Project: https://github.com/FasterXML/jackson-jaxrs-providers
 * Copyright: (c) 2009-2023 FasterXML, LLC. All rights reserved unless otherwise indicated.
diff --git a/pom.xml b/pom.xml
index c2a22c2a70..df7d3c39c0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -2217,7 +2217,7 @@
         <xmlunit.version>2.10.0</xmlunit.version>
         <httpclient.version>4.5.14</httpclient.version>
         <httpclient5.version>5.3.1</httpclient5.version>
-        <jackson.version>2.17.0</jackson.version>
+        <jackson.version>2.17.1</jackson.version>
         <jackson1.version>1.9.13</jackson1.version>
         <javassist.version>3.30.2-GA</javassist.version>
         <jersey1.version>1.19.3</jersey1.version>