diff --git a/extras/retrofit2/pom.xml b/extras/retrofit2/pom.xml
index 7aa1328d40..5d4ed31577 100644
--- a/extras/retrofit2/pom.xml
+++ b/extras/retrofit2/pom.xml
@@ -12,7 +12,7 @@
   <description>The Async Http Client Retrofit2 Extras.</description>
 
   <properties>
-    <retrofit2.version>2.4.0</retrofit2.version>
+    <retrofit2.version>2.9.0</retrofit2.version>
     <lombok.version>1.16.20</lombok.version>
   </properties>