diff --git a/Tools/requirements-dev.txt b/Tools/requirements-dev.txt
index 900c5028b0..687aecc8ea 100644
--- a/Tools/requirements-dev.txt
+++ b/Tools/requirements-dev.txt
@@ -1,6 +1,6 @@
 # Requirements file for external linters and checks we run on
 # Tools/clinic, Tools/cases_generator/, and Tools/peg_generator/ in CI
-mypy==2.3.0
+mypy==2.3.1
 
 # needed for peg_generator:
 types-psutil==7.2.2.20260518