diff --git a/templates/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile.template b/templates/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile.template
index 6204c3e2cb2..12b99844253 100644
--- a/templates/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile.template
+++ b/templates/tools/dockerfile/interoptest/grpc_interop_http2/Dockerfile.template
@@ -33,7 +33,7 @@
   
   <%include file="../../go_path.include"/>
   <%include file="../../python_deps.include"/>
-  RUN pip install twisted h2
+  RUN pip install twisted h2 hyper
 
   # Define the default command.
   CMD ["bash"]