diff --git a/requirements-dev.txt b/requirements-dev.txt
index 15f85d6fb9b..8f6c8791d89 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -15,7 +15,7 @@ click==8.1.7
 colorama==0.4.6
 cryptography==44.0.0
 Deprecated==1.2.15
-dill==0.3.8
+dill==0.3.9
 docutils==0.20.1
 flit==3.10.1
 flit_core==3.10.1