diff --git a/package.json b/package.json
index 4bcd56254..17a9d0b0c 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
     "protos"
   ],
   "dependencies": {
-    "@grpc/grpc-js": "^0.3.0",
+    "@grpc/grpc-js": "^0.4.0",
     "@grpc/proto-loader": "^0.5.0",
     "duplexify": "^3.6.0",
     "google-auth-library": "^3.0.0",
diff --git a/system-test/fixtures/google-gax-packaging-test-app/package.json b/system-test/fixtures/google-gax-packaging-test-app/package.json
index 91cedc29b..6d55666a6 100644
--- a/system-test/fixtures/google-gax-packaging-test-app/package.json
+++ b/system-test/fixtures/google-gax-packaging-test-app/package.json
@@ -25,7 +25,7 @@
     "through2": "^3.0.1"
   },
   "dependencies": {
-    "@grpc/grpc-js": "^0.3.6",
+    "@grpc/grpc-js": "^0.4.0",
     "google-gax": "file:./google-gax.tgz",
     "grpc": "^1.20.2",
     "lodash.merge": "^4.6.1",