diff --git a/pkgs/development/libraries/haskell/lambdabot-utils/default.nix b/pkgs/development/libraries/haskell/lambdabot-utils/default.nix
index 3339e7aa96d..51db50a75b7 100644
--- a/pkgs/development/libraries/haskell/lambdabot-utils/default.nix
+++ b/pkgs/development/libraries/haskell/lambdabot-utils/default.nix
@@ -4,8 +4,8 @@
 
 cabal.mkDerivation (self: {
   pname = "lambdabot-utils";
-  version = "4.2.1";
-  sha256 = "1a5rj8zjvfhziwldikgki92lg9bwv6h9ysp6yqip6lja18h4lilx";
+  version = "4.2.2";
+  sha256 = "0mmz9rn6vv8xnavmz66g164h1liir3rzg1n7lmbcsgwcyhm925d7";
   buildDepends = [
     binary haskellSrc mtl network random regexCompat regexPosix syb
     tagsoup utf8String zlib