diff --git a/requirements_test.txt b/requirements_test.txt
index 2dbc98326db..d001c5d1a78 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -1,7 +1,7 @@
 # linters such as flake8 and pylint should be pinned, as new releases
 # make new things fail. Manually update these pins when pulling in a
 # new version
-flake8==3.2.0
+flake8==3.2.1
 pylint==1.6.4
 mypy-lang==0.4.5
 pydocstyle==1.1.1
@@ -15,3 +15,4 @@ pytest-catchlog>=1.2.2
 pytest-sugar>=0.7.1
 requests_mock>=1.0
 mock-open>=1.3.1
+flake8-docstrings==1.0.2