diff --git a/dev-requirements.txt b/dev-requirements.txt
index 92dda5f..c1a75ad 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,9 +1,12 @@
 .[cli]
 .[color]
-tox==3.20
-pylint==2.6.0
-pytype==2020.8.28
-pytest==6.0.1
-pytest-cov==2.10.1
-pre-commit==2.7.1; python_version > '3.5'
+tox==3.23.0
+pylint==2.7.2; python_version > '3.5'
+pylint==2.6.1; python_version == '3.5'
+pytype==2021.3.3; python_version > '3.5'
+pytype==2020.10.08; python_version == '3.5'
+pytest==6.2.2; python_version > '3.5'
+pytest==6.1.2; python_version == '3.5'
+pytest-cov==2.11.1
+pre-commit==2.11.0; python_version > '3.5'
 black==20.8b1; python_version > '3.5'