diff --git a/nix/packages/by-name/ruler/package.nix b/nix/packages/by-name/ruler/package.nix
index 8fba0215..0e7d8aa9 100644
--- a/nix/packages/by-name/ruler/package.nix
+++ b/nix/packages/by-name/ruler/package.nix
@@ -11,8 +11,8 @@ let
     domain = "git.confusedcompiler.org";
     owner = "leana8959";
     repo = "ruler";
-    rev = "52d8b95245aec702ec4105bcb040ea44771a77bc";
-    hash = "sha256-UIpt8NPEyVM2BR0WAhAv66XvpVj124odzzAC6tpTZVU=";
+    rev = "2556b4985065d093b1db3a14a2c5c37115871c78";
+    hash = "sha256-OvNhDpyAbZp+d0rSXLE55BvM5jT3OI8q79D6aVaA2FI=";
   }) { };
 
   cabalOverrides = o: {