diff --git a/pkgs/development/libraries/haskell/snap/snap.nix b/pkgs/development/libraries/haskell/snap/snap.nix
index 966a298fd3b6..11ef315a523e 100644
--- a/pkgs/development/libraries/haskell/snap/snap.nix
+++ b/pkgs/development/libraries/haskell/snap/snap.nix
@@ -8,8 +8,8 @@
 
 cabal.mkDerivation (self: {
   pname = "snap";
-  version = "0.12.0";
-  sha256 = "0nccmbvhwrcfkz4771bhc210mh2ic0i93ks1752ndgk3007rkiff";
+  version = "0.12.1";
+  sha256 = "0mmmai257r3ssmy58v4c3hds0i0hwrww6r495j8yb2r90b31b1gg";
   isLibrary = true;
   isExecutable = true;
   buildDepends = [