diff --git a/test_requirements.txt b/test_requirements.txt
index aedd8ab43c..bcd36c9dfc 100644
--- a/test_requirements.txt
+++ b/test_requirements.txt
@@ -6,7 +6,7 @@ configparser < 5.0.0 ; python_version == "2.*"
 pyparsing < 3.0.0 ; python_version == "2.*"
 flake8==3.9.0
 pycodestyle==2.7.0
-flake8-docstrings==1.5.0
+flake8-docstrings==1.6.0
 flake8-import-order==0.18.1
 flake8-quotes==3.2.0
 pep8-naming==0.11.1