diff --git a/pkgs/development/libraries/haskell/arithmoi/default.nix b/pkgs/development/libraries/haskell/arithmoi/default.nix
index eb8d85f8985..eb2eaa56df3 100644
--- a/pkgs/development/libraries/haskell/arithmoi/default.nix
+++ b/pkgs/development/libraries/haskell/arithmoi/default.nix
@@ -4,8 +4,8 @@
 
 cabal.mkDerivation (self: {
   pname = "arithmoi";
-  version = "0.4.1.0";
-  sha256 = "1xmwxmvl9l1fa2sgr4ff7al8b5d5136h4fq9r05abj3nfnx1a0iq";
+  version = "0.4.1.1";
+  sha256 = "02wrm24dpcsdsjaic30416axad5s4y822si1am4smb2qvrhps9ix";
   buildDepends = [ mtl random ];
   jailbreak = true;
   meta = {