diff --git a/build.gradle b/build.gradle
index 4927a4bb38..2462cc3812 100644
--- a/build.gradle
+++ b/build.gradle
@@ -137,9 +137,9 @@ subprojects {
                 protobuf_plugin: 'com.google.protobuf:protobuf-gradle-plugin:0.7.4',
                 protobuf_util: "com.google.protobuf:protobuf-java-util:${protobufVersion}",
 
-                netty: 'io.netty:netty-codec-http2:4.1.0.CR3',
-                netty_epoll: 'io.netty:netty-transport-native-epoll:4.1.0.CR3' + epoll_suffix,
-                netty_tcnative: 'io.netty:netty-tcnative-boringssl-static:1.1.33.Fork14:' + osdetector.classifier,
+                netty: 'io.netty:netty-codec-http2:4.1.0.CR4',
+                netty_epoll: 'io.netty:netty-transport-native-epoll:4.1.0.CR4' + epoll_suffix,
+                netty_tcnative: 'io.netty:netty-tcnative-boringssl-static:1.1.33.Fork15:' + osdetector.classifier,
 
                 // Test dependencies.
                 junit: 'junit:junit:4.11',