diff --git a/pkgs/development/libraries/acl/default.nix b/pkgs/development/libraries/acl/default.nix
index 9bba05fd90bf..99b12db67122 100644
--- a/pkgs/development/libraries/acl/default.nix
+++ b/pkgs/development/libraries/acl/default.nix
@@ -13,11 +13,11 @@
 
 stdenv.mkDerivation rec {
   pname = "acl";
-  version = "2.3.2";
+  version = "2.4.0";
 
   src = fetchurl {
     url = "mirror://savannah/acl/acl-${version}.tar.gz";
-    hash = "sha256-XyvbrWKXB6p9hcYj+ZSqih0t7FWnPeUgW6wL9gWKL3w=";
+    hash = "sha256-c8hTw9ROH2k+WpaphvG9GdPQ2sLH1FPnlhd3dLxOX2o=";
   };
 
   outputs = [