diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson/pom.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson/pom.mustache
index eb30fa5a18b..f38837360ca 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson/pom.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson/pom.mustache
@@ -417,7 +417,7 @@
         {{#swagger2AnnotationLibrary}}
         <swagger-annotations-version>2.2.15</swagger-annotations-version>
         {{/swagger2AnnotationLibrary}}
-        <okhttp-version>4.11.0</okhttp-version>
+        <okhttp-version>4.12.0</okhttp-version>
         <gson-version>2.10.1</gson-version>
         <commons-lang3-version>3.14.0</commons-lang3-version>
         {{#openApiNullable}}
diff --git a/samples/client/echo_api/java/okhttp-gson-user-defined-templates/pom.xml b/samples/client/echo_api/java/okhttp-gson-user-defined-templates/pom.xml
index 6d7d759f353..e45b5a340e6 100644
--- a/samples/client/echo_api/java/okhttp-gson-user-defined-templates/pom.xml
+++ b/samples/client/echo_api/java/okhttp-gson-user-defined-templates/pom.xml
@@ -334,7 +334,7 @@
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <gson-fire-version>1.9.0</gson-fire-version>
-        <okhttp-version>4.11.0</okhttp-version>
+        <okhttp-version>4.12.0</okhttp-version>
         <gson-version>2.10.1</gson-version>
         <commons-lang3-version>3.14.0</commons-lang3-version>
         <jackson-databind-nullable-version>0.2.6</jackson-databind-nullable-version>
diff --git a/samples/client/echo_api/java/okhttp-gson/pom.xml b/samples/client/echo_api/java/okhttp-gson/pom.xml
index 3c3aaad6fb5..55a4e0aa09b 100644
--- a/samples/client/echo_api/java/okhttp-gson/pom.xml
+++ b/samples/client/echo_api/java/okhttp-gson/pom.xml
@@ -329,7 +329,7 @@
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <gson-fire-version>1.9.0</gson-fire-version>
-        <okhttp-version>4.11.0</okhttp-version>
+        <okhttp-version>4.12.0</okhttp-version>
         <gson-version>2.10.1</gson-version>
         <commons-lang3-version>3.14.0</commons-lang3-version>
         <jackson-databind-nullable-version>0.2.6</jackson-databind-nullable-version>
diff --git a/samples/client/others/java/okhttp-gson-oneOf/pom.xml b/samples/client/others/java/okhttp-gson-oneOf/pom.xml
index bb8290ae29a..f5c192c9151 100644
--- a/samples/client/others/java/okhttp-gson-oneOf/pom.xml
+++ b/samples/client/others/java/okhttp-gson-oneOf/pom.xml
@@ -329,7 +329,7 @@
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <gson-fire-version>1.9.0</gson-fire-version>
-        <okhttp-version>4.11.0</okhttp-version>
+        <okhttp-version>4.12.0</okhttp-version>
         <gson-version>2.10.1</gson-version>
         <commons-lang3-version>3.14.0</commons-lang3-version>
         <jackson-databind-nullable-version>0.2.6</jackson-databind-nullable-version>
diff --git a/samples/client/others/java/okhttp-gson-streaming/pom.xml b/samples/client/others/java/okhttp-gson-streaming/pom.xml
index 83e02f07a08..bb46b05bbee 100644
--- a/samples/client/others/java/okhttp-gson-streaming/pom.xml
+++ b/samples/client/others/java/okhttp-gson-streaming/pom.xml
@@ -329,7 +329,7 @@
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <gson-fire-version>1.9.0</gson-fire-version>
-        <okhttp-version>4.11.0</okhttp-version>
+        <okhttp-version>4.12.0</okhttp-version>
         <gson-version>2.10.1</gson-version>
         <commons-lang3-version>3.14.0</commons-lang3-version>
         <jackson-databind-nullable-version>0.2.6</jackson-databind-nullable-version>
diff --git a/samples/client/petstore/java/okhttp-gson-3.1/pom.xml b/samples/client/petstore/java/okhttp-gson-3.1/pom.xml
index 0871be01351..4da8ba066f4 100644
--- a/samples/client/petstore/java/okhttp-gson-3.1/pom.xml
+++ b/samples/client/petstore/java/okhttp-gson-3.1/pom.xml
@@ -334,7 +334,7 @@
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <gson-fire-version>1.9.0</gson-fire-version>
-        <okhttp-version>4.11.0</okhttp-version>
+        <okhttp-version>4.12.0</okhttp-version>
         <gson-version>2.10.1</gson-version>
         <commons-lang3-version>3.14.0</commons-lang3-version>
         <jackson-databind-nullable-version>0.2.6</jackson-databind-nullable-version>
diff --git a/samples/client/petstore/java/okhttp-gson-awsv4signature/pom.xml b/samples/client/petstore/java/okhttp-gson-awsv4signature/pom.xml
index 8085232eb92..45d1d0f16ee 100644
--- a/samples/client/petstore/java/okhttp-gson-awsv4signature/pom.xml
+++ b/samples/client/petstore/java/okhttp-gson-awsv4signature/pom.xml
@@ -339,7 +339,7 @@
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <gson-fire-version>1.9.0</gson-fire-version>
-        <okhttp-version>4.11.0</okhttp-version>
+        <okhttp-version>4.12.0</okhttp-version>
         <gson-version>2.10.1</gson-version>
         <commons-lang3-version>3.14.0</commons-lang3-version>
         <jackson-databind-nullable-version>0.2.6</jackson-databind-nullable-version>
diff --git a/samples/client/petstore/java/okhttp-gson-dynamicOperations/pom.xml b/samples/client/petstore/java/okhttp-gson-dynamicOperations/pom.xml
index 340c3277d16..3f7d274da61 100644
--- a/samples/client/petstore/java/okhttp-gson-dynamicOperations/pom.xml
+++ b/samples/client/petstore/java/okhttp-gson-dynamicOperations/pom.xml
@@ -339,7 +339,7 @@
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <gson-fire-version>1.9.0</gson-fire-version>
-        <okhttp-version>4.11.0</okhttp-version>
+        <okhttp-version>4.12.0</okhttp-version>
         <gson-version>2.10.1</gson-version>
         <commons-lang3-version>3.14.0</commons-lang3-version>
         <jackson-databind-nullable-version>0.2.6</jackson-databind-nullable-version>
diff --git a/samples/client/petstore/java/okhttp-gson-group-parameter/pom.xml b/samples/client/petstore/java/okhttp-gson-group-parameter/pom.xml
index ed94eca8ad8..3a76449b874 100644
--- a/samples/client/petstore/java/okhttp-gson-group-parameter/pom.xml
+++ b/samples/client/petstore/java/okhttp-gson-group-parameter/pom.xml
@@ -334,7 +334,7 @@
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <gson-fire-version>1.9.0</gson-fire-version>
-        <okhttp-version>4.11.0</okhttp-version>
+        <okhttp-version>4.12.0</okhttp-version>
         <gson-version>2.10.1</gson-version>
         <commons-lang3-version>3.14.0</commons-lang3-version>
         <jackson-databind-nullable-version>0.2.6</jackson-databind-nullable-version>
diff --git a/samples/client/petstore/java/okhttp-gson-nullable-required/pom.xml b/samples/client/petstore/java/okhttp-gson-nullable-required/pom.xml
index eeb259d1343..5a595c33fdb 100644
--- a/samples/client/petstore/java/okhttp-gson-nullable-required/pom.xml
+++ b/samples/client/petstore/java/okhttp-gson-nullable-required/pom.xml
@@ -334,7 +334,7 @@
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <gson-fire-version>1.9.0</gson-fire-version>
-        <okhttp-version>4.11.0</okhttp-version>
+        <okhttp-version>4.12.0</okhttp-version>
         <gson-version>2.10.1</gson-version>
         <commons-lang3-version>3.14.0</commons-lang3-version>
         <jackson-databind-nullable-version>0.2.6</jackson-databind-nullable-version>
diff --git a/samples/client/petstore/java/okhttp-gson-parcelableModel/pom.xml b/samples/client/petstore/java/okhttp-gson-parcelableModel/pom.xml
index ea1f1fdf159..a714642ec5f 100644
--- a/samples/client/petstore/java/okhttp-gson-parcelableModel/pom.xml
+++ b/samples/client/petstore/java/okhttp-gson-parcelableModel/pom.xml
@@ -341,7 +341,7 @@
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <gson-fire-version>1.9.0</gson-fire-version>
-        <okhttp-version>4.11.0</okhttp-version>
+        <okhttp-version>4.12.0</okhttp-version>
         <gson-version>2.10.1</gson-version>
         <commons-lang3-version>3.14.0</commons-lang3-version>
         <jackson-databind-nullable-version>0.2.6</jackson-databind-nullable-version>
diff --git a/samples/client/petstore/java/okhttp-gson-swagger1/pom.xml b/samples/client/petstore/java/okhttp-gson-swagger1/pom.xml
index 1d394370ae9..465298fd9c1 100644
--- a/samples/client/petstore/java/okhttp-gson-swagger1/pom.xml
+++ b/samples/client/petstore/java/okhttp-gson-swagger1/pom.xml
@@ -340,7 +340,7 @@
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <gson-fire-version>1.9.0</gson-fire-version>
         <swagger-annotations-version>1.6.6</swagger-annotations-version>
-        <okhttp-version>4.11.0</okhttp-version>
+        <okhttp-version>4.12.0</okhttp-version>
         <gson-version>2.10.1</gson-version>
         <commons-lang3-version>3.14.0</commons-lang3-version>
         <jackson-databind-nullable-version>0.2.6</jackson-databind-nullable-version>
diff --git a/samples/client/petstore/java/okhttp-gson-swagger2/pom.xml b/samples/client/petstore/java/okhttp-gson-swagger2/pom.xml
index d0e30fb7e0f..b4398077ab7 100644
--- a/samples/client/petstore/java/okhttp-gson-swagger2/pom.xml
+++ b/samples/client/petstore/java/okhttp-gson-swagger2/pom.xml
@@ -340,7 +340,7 @@
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <gson-fire-version>1.9.0</gson-fire-version>
         <swagger-annotations-version>2.2.15</swagger-annotations-version>
-        <okhttp-version>4.11.0</okhttp-version>
+        <okhttp-version>4.12.0</okhttp-version>
         <gson-version>2.10.1</gson-version>
         <commons-lang3-version>3.14.0</commons-lang3-version>
         <jackson-databind-nullable-version>0.2.6</jackson-databind-nullable-version>