diff --git a/ament_black/setup.py b/ament_black/setup.py
index 9757c1d..4622c78 100644
--- a/ament_black/setup.py
+++ b/ament_black/setup.py
@@ -13,6 +13,7 @@
     ],
     install_requires=[
         'black==21.12b0',
+        'packaging>=20.3',
         'setuptools>=56',
         'unidiff>=0.5',
         'uvloop==0.17.0',