diff --git a/samples/client/petstore/java/retrofit2/pom.xml b/samples/client/petstore/java/retrofit2/pom.xml
index 8aeb47c55b5..f8ff593bd7c 100644
--- a/samples/client/petstore/java/retrofit2/pom.xml
+++ b/samples/client/petstore/java/retrofit2/pom.xml
@@ -247,7 +247,7 @@
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <gson-fire-version>1.8.0</gson-fire-version>
         <swagger-core-version>1.5.18</swagger-core-version>
-        <retrofit-version>2.3.0</retrofit-version>
+        <retrofit-version>3.0.0</retrofit-version>
             <threetenbp-version>1.3.5</threetenbp-version>
         <oltu-version>1.0.1</oltu-version>
         <junit-version>4.12</junit-version>