diff --git a/net/grpc/gateway/docker/envoy/Dockerfile b/net/grpc/gateway/docker/envoy/Dockerfile
index 3000fbfd..7f67caee 100644
--- a/net/grpc/gateway/docker/envoy/Dockerfile
+++ b/net/grpc/gateway/docker/envoy/Dockerfile
@@ -12,7 +12,7 @@
# See the License for the specific language governing permissions and
# limitations under the License.
-FROM envoyproxy/envoy:latest
+FROM envoyproxy/envoy:v1.12.2
COPY net/grpc/gateway/examples/echo/envoy.yaml /etc/envoy/envoy.yaml
diff --git a/net/grpc/gateway/docker/ts_client/Dockerfile b/net/grpc/gateway/docker/ts_client/Dockerfile
index 01b88677..e4f97045 100644
--- a/net/grpc/gateway/docker/ts_client/Dockerfile
+++ b/net/grpc/gateway/docker/ts_client/Dockerfile
@@ -14,7 +14,7 @@
FROM grpcweb/prereqs
-RUN npm install -g tsc typescript
+RUN npm install -g typescript
WORKDIR /github/grpc-web/net/grpc/gateway/examples/echo
diff --git a/net/grpc/gateway/examples/helloworld/README.md b/net/grpc/gateway/examples/helloworld/README.md
index c382a758..9b22b37b 100644
--- a/net/grpc/gateway/examples/helloworld/README.md
+++ b/net/grpc/gateway/examples/helloworld/README.md
@@ -216,6 +216,7 @@ And finally a simple `index.html` file.
+ Open up the developer console and see the logs for the output.