diff --git a/pom.xml b/pom.xml
index fe7df4b52..8ed47e133 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,7 +23,7 @@
         <logback.version>1.3.0-alpha12</logback.version>
         <jacoco.version>0.8.7</jacoco.version>
         <waffle-jna.version>3.1.1</waffle-jna.version>
-        <mysql-connector-java.version>8.0.28</mysql-connector-java.version>
+        <mysql-connector-java.version>8.0.29</mysql-connector-java.version>
         <bnd-maven-plugin.version>6.2.0</bnd-maven-plugin.version>
     </properties>
 
diff --git a/src/main/java/org/mariadb/jdbc/Driver.java b/src/main/java/org/mariadb/jdbc/Driver.java
index ce0348b4a..db5da2728 100644
--- a/src/main/java/org/mariadb/jdbc/Driver.java
+++ b/src/main/java/org/mariadb/jdbc/Driver.java
@@ -81,7 +81,7 @@ public static Connection connect(Configuration configuration) throws SQLExceptio
   }
 
   @FunctionalInterface
-  public interface ClientInstance<T, U, V, W, R> {
+  private interface ClientInstance<T, U, V, W, R> {
     R apply(T t, U u, V v, W w) throws SQLException;
   }