diff --git a/requirements.txt b/requirements.txt
index 7470a61a..ee9b1115 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 cruft==2.15.0
 mex-release==0.3.0
-pdm==2.20.1
+pdm==2.21.0
 pre-commit==4.0.1
 wheel==0.45.0