diff --git a/requirements_test.txt b/requirements_test.txt
index a1f09f5..914c006 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -4,7 +4,7 @@ flake8==3.8.3
 flake8-docstrings==1.5.0
 pre-commit==2.6.0
 pylint==2.6.0
-pydocstyle==5.0.2
+pydocstyle==5.1.1
 pytest==6.0.1
 pytest-cov==2.10.1
 pytest-sugar==0.9.4