update version
diff --git a/java/README.md b/java/README.md
index 5e4fb8b..476f6dc 100644
--- a/java/README.md
+++ b/java/README.md
@@ -19,7 +19,7 @@
 <dependency>
   <groupId>com.google.protobuf</groupId>
   <artifactId>protobuf-java</artifactId>
-  <version>3.5.1</version>
+  <version>3.6.1</version>
 </dependency>
 ```
 
@@ -33,7 +33,7 @@
 <dependency>
   <groupId>com.google.protobuf</groupId>
   <artifactId>protobuf-java-util</artifactId>
-  <version>3.5.1</version>
+  <version>3.6.1</version>
 </dependency>
 ```