diff --git a/constraints/ci.txt b/constraints/ci.txt
index 6299f2c..e758946 100644
--- a/constraints/ci.txt
+++ b/constraints/ci.txt
@@ -10,7 +10,7 @@ build==1.5.0
 CacheControl==0.14.4
 certifi==2026.6.17
 cffi==2.1.0
-chardet==5.2.0
+chardet==7.4.3
 charset-normalizer==3.4.9
 colorama==0.4.6
 coverage==7.15.2