diff --git a/requirements/test.txt b/requirements/test.txt
index b892e633..90eeb0cd 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -29,7 +29,7 @@ flake8-docstrings==1.3.0  # via -r test.in
 flake8-import-order==0.18.1  # via -r test.in
 flake8-polyfill==1.0.2    # via flake8-docstrings
 flake8==3.7.9             # via -r test.in, flake8-docstrings, flake8-polyfill
-grpcio-tools==1.28.1      # via -r test.in
+grpcio-tools==1.36.1      # via -r test.in
 hypothesis==5.10.4        # via -r test.in
 idna==2.9                 # via requests
 imagesize==1.2.0          # via sphinx