diff --git a/requirements.txt b/requirements.txt
index c1f919a5..8e9cd918 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ attrs==25.4.0
 babel==2.17.0
 bcrypt==5.0.0
 bibtexparser==1.4.3
-black==25.12.0
+black==26.3.1
 boto3==1.42.28
 botocore==1.42.28
 certifi==2026.1.4