diff --git a/instrumentation/grpc-1.6/javaagent/grpc-1.6-javaagent.gradle b/instrumentation/grpc-1.6/javaagent/grpc-1.6-javaagent.gradle
index 767f25e8bd..5c048a2f59 100644
--- a/instrumentation/grpc-1.6/javaagent/grpc-1.6-javaagent.gradle
+++ b/instrumentation/grpc-1.6/javaagent/grpc-1.6-javaagent.gradle
@@ -31,6 +31,8 @@ dependencies {
   implementation project(':instrumentation:grpc-1.6:library')
 
   library "io.grpc:grpc-core:${grpcVersion}"
+  
+  testInstrumentation project(':instrumentation:netty:netty-4.1:javaagent')
 
   testLibrary "io.grpc:grpc-netty:${grpcVersion}"
   testLibrary "io.grpc:grpc-protobuf:${grpcVersion}"