diff --git a/requirements.txt b/requirements.txt
index 1b9a4af..f5c2b8f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-AccessControl==4.2
+AccessControl==4.3
 Acquisition==4.7
 alembic==1.3.2
 apted==1.0.3