diff --git a/dev-requirements.txt b/dev-requirements.txt
index f5b3b17..95d05f7 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,4 +1,4 @@
 tox==4.25.0
 pytest==8.3.5
 pylama==8.4.1
-mypy==1.15.0
+mypy==1.20.2