diff --git a/requirements_test.txt b/requirements_test.txt
index 26b888f4..11c46725 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -1,6 +1,6 @@
 aresponses==2.0.0
 coverage==5.1
-flake8==3.8.2
+flake8==3.8.3
 flake8-docstrings==1.5.0
 isort==4.3.21
 mypy==0.780