diff --git a/constraints/ci.txt b/constraints/ci.txt
index 367b166..111324d 100644
--- a/constraints/ci.txt
+++ b/constraints/ci.txt
@@ -9,7 +9,7 @@ boolean.py==5.0
 build==1.5.0
 CacheControl==0.14.4
 certifi==2026.7.22
-cffi==2.1.0
+cffi==2.1.1
 charset-normalizer==3.4.9
 colorama==0.4.6
 coverage==7.15.3