diff --git a/requirements_test.txt b/requirements_test.txt
index aa65ae9..d068800 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -2,7 +2,7 @@ black==20.8b1
 codespell==2.0.0
 flake8==3.8.4
 mypy==0.812
-pydocstyle==5.1.1
+pydocstyle==6.0.0
 cryptography==3.2
 pylint==2.7.2
 pylint-strict-informational==0.1