diff --git a/retrofit/pom.xml b/retrofit/pom.xml
index f0c8e5b..6ff8846 100644
--- a/retrofit/pom.xml
+++ b/retrofit/pom.xml
@@ -62,7 +62,7 @@
 
     <!-- Converter Dependencies -->
     <gson.version>2.8.2</gson.version>
-    <protobuf.version>3.5.0</protobuf.version>
+    <protobuf.version>3.16.1</protobuf.version>
     <jackson.version>2.9.10.1</jackson.version>
     <wire.version>2.2.0</wire.version>
     <simplexml.version>2.7.1</simplexml.version>