diff --git a/chameleon/grpc_client/grpc_client.py b/chameleon/grpc_client/grpc_client.py
index 5f373a7..c2d66db 100644
--- a/chameleon/grpc_client/grpc_client.py
+++ b/chameleon/grpc_client/grpc_client.py
@@ -136,7 +136,7 @@
 
             cmd = (
                 'cd %s && '
-                'env PATH=%s '
+                'env PATH=%s PYTHONPATH=%s '
                 'python -m grpc.tools.protoc '
                 '-I. '
                 '-I%s '
@@ -148,6 +148,7 @@
                     self.work_dir,
                     ':'.join([os.environ['PATH'], self.plugin_dir]),
                     google_api_dir,
+                    google_api_dir,
                     self.plugin_dir,
                     fname)
             )