diff --git a/requirements.txt b/requirements.txt
index 0dc4a08..bd32afb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ astroid==3.3.9
 attrs==25.3.0
 autopep8==2.3.2
 coverage==7.8.0
-dill==0.3.9
+dill==0.4.0
 exceptiongroup==1.2.2
 flake8==7.2.0
 iniconfig==2.1.0