diff --git a/requirements_dev.txt b/requirements_dev.txt
index 17ce34c..fdc09b4 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -3,6 +3,6 @@ pypdf
 pytest
 flake8
 isort
-black
+black==25.11.0
 coverage
 codecov