diff --git a/dev-requirements.txt b/dev-requirements.txt
index a60e301..9d9237e 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,4 +1,5 @@
-pydocstyle==3.0.0
+pydocstyle==3.0.0; python_version < "3.5"
+pydocstyle; python_version >= "3.5"
 flake8
 flake8-colors
 flake8-blind-except