diff --git a/samples/client/petstore/java/feign/pom.xml b/samples/client/petstore/java/feign/pom.xml
index 9ed227ceae..b8b7c6d85a 100644
--- a/samples/client/petstore/java/feign/pom.xml
+++ b/samples/client/petstore/java/feign/pom.xml
@@ -235,7 +235,7 @@
     <java.version>1.7</java.version>
     <maven.compiler.source>${java.version}</maven.compiler.source>
     <maven.compiler.target>${java.version}</maven.compiler.target>
-    <swagger-core-version>1.5.9</swagger-core-version>
+    <swagger-core-version>1.5.12</swagger-core-version>
     <feign-version>8.17.0</feign-version>
     <feign-form-version>2.0.2</feign-form-version>
     <jackson-version>2.7.5</jackson-version>
diff --git a/samples/client/petstore/java/jersey2-java8/pom.xml b/samples/client/petstore/java/jersey2-java8/pom.xml
index be696a5399..ac527b7d82 100644
--- a/samples/client/petstore/java/jersey2-java8/pom.xml
+++ b/samples/client/petstore/java/jersey2-java8/pom.xml
@@ -238,7 +238,7 @@
     </dependency>
   </dependencies>
   <properties>
-    <swagger-core-version>1.5.9</swagger-core-version>
+    <swagger-core-version>1.5.12</swagger-core-version>
     <jersey-version>2.22.2</jersey-version>
     <jackson-version>2.7.5</jackson-version>
     <maven-plugin-version>1.0.0</maven-plugin-version>
diff --git a/samples/client/petstore/java/jersey2/pom.xml b/samples/client/petstore/java/jersey2/pom.xml
index 1ead356571..e4e73cfc09 100644
--- a/samples/client/petstore/java/jersey2/pom.xml
+++ b/samples/client/petstore/java/jersey2/pom.xml
@@ -243,7 +243,7 @@
     </dependency>
   </dependencies>
   <properties>
-    <swagger-core-version>1.5.9</swagger-core-version>
+    <swagger-core-version>1.5.12</swagger-core-version>
     <jersey-version>2.22.2</jersey-version>
     <jackson-version>2.7.5</jackson-version>
     <jodatime-version>2.9.4</jodatime-version>
diff --git a/samples/client/petstore/java/okhttp-gson/pom.xml b/samples/client/petstore/java/okhttp-gson/pom.xml
index 94bb8b0130..26751c4e3a 100644
--- a/samples/client/petstore/java/okhttp-gson/pom.xml
+++ b/samples/client/petstore/java/okhttp-gson/pom.xml
@@ -206,7 +206,7 @@
     <java.version>1.7</java.version>
     <maven.compiler.source>${java.version}</maven.compiler.source>
     <maven.compiler.target>${java.version}</maven.compiler.target>
-    <swagger-core-version>1.5.9</swagger-core-version>
+    <swagger-core-version>1.5.12</swagger-core-version>
     <okhttp-version>2.7.5</okhttp-version>
     <gson-version>2.6.2</gson-version>
     <jodatime-version>2.9.3</jodatime-version>
diff --git a/samples/client/petstore/java/retrofit/pom.xml b/samples/client/petstore/java/retrofit/pom.xml
index 5d23171a29..aaa9654d87 100644
--- a/samples/client/petstore/java/retrofit/pom.xml
+++ b/samples/client/petstore/java/retrofit/pom.xml
@@ -212,7 +212,7 @@
     </dependency>
   </dependencies>
   <properties>
-    <swagger-core-version>1.5.9</swagger-core-version>
+    <swagger-core-version>1.5.12</swagger-core-version>
     <retrofit-version>1.9.0</retrofit-version>
     <okhttp-version>2.7.5</okhttp-version>
     <jodatime-version>2.9.3</jodatime-version>
diff --git a/samples/client/petstore/java/retrofit2-play24/pom.xml b/samples/client/petstore/java/retrofit2-play24/pom.xml
index e4770b057d..54db6cdee8 100644
--- a/samples/client/petstore/java/retrofit2-play24/pom.xml
+++ b/samples/client/petstore/java/retrofit2-play24/pom.xml
@@ -245,7 +245,7 @@
     <java.version>1.7</java.version>
     <maven.compiler.source>${java.version}</maven.compiler.source>
     <maven.compiler.target>${java.version}</maven.compiler.target>
-    <swagger-core-version>1.5.9</swagger-core-version>
+    <swagger-core-version>1.5.12</swagger-core-version>
     <retrofit-version>2.1.0</retrofit-version>
     <jackson-version>2.7.5</jackson-version>
     <jodatime-version>2.9.4</jodatime-version>
diff --git a/samples/client/petstore/java/retrofit2/pom.xml b/samples/client/petstore/java/retrofit2/pom.xml
index a0f8bd0efa..46705e6f4c 100644
--- a/samples/client/petstore/java/retrofit2/pom.xml
+++ b/samples/client/petstore/java/retrofit2/pom.xml
@@ -214,7 +214,7 @@
     <java.version>1.7</java.version>
     <maven.compiler.source>${java.version}</maven.compiler.source>
     <maven.compiler.target>${java.version}</maven.compiler.target>
-    <swagger-core-version>1.5.9</swagger-core-version>
+    <swagger-core-version>1.5.12</swagger-core-version>
     <retrofit-version>2.1.0</retrofit-version>
     <jodatime-version>2.9.4</jodatime-version>
     <oltu-version>1.0.1</oltu-version>
diff --git a/samples/client/petstore/java/retrofit2rx/pom.xml b/samples/client/petstore/java/retrofit2rx/pom.xml
index 14ed953e82..ed74e3e89e 100644
--- a/samples/client/petstore/java/retrofit2rx/pom.xml
+++ b/samples/client/petstore/java/retrofit2rx/pom.xml
@@ -224,7 +224,7 @@
     <java.version>1.7</java.version>
     <maven.compiler.source>${java.version}</maven.compiler.source>
     <maven.compiler.target>${java.version}</maven.compiler.target>
-    <swagger-core-version>1.5.9</swagger-core-version>
+    <swagger-core-version>1.5.12</swagger-core-version>
     <retrofit-version>2.1.0</retrofit-version>
     <rxjava-version>1.1.6</rxjava-version>
     <jodatime-version>2.9.4</jodatime-version>