diff --git a/pkgs/development/libraries/haskell/pool/default.nix b/pkgs/development/libraries/haskell/pool/default.nix
index 09c871692ec9..fb417a3faf2e 100644
--- a/pkgs/development/libraries/haskell/pool/default.nix
+++ b/pkgs/development/libraries/haskell/pool/default.nix
@@ -2,12 +2,12 @@
 
 cabal.mkDerivation (self: {
   pname = "pool";
-  version = "0.1.2";
-  sha256 = "05lrinyk9gxdf67vwdav93ral2y8qsb33i9y5k91vlcjfp7w516q";
+  version = "0.1.2.1";
+  sha256 = "1fwwnwxk3kprr2z9y7bwa1qwxfkzwcb2n5l6vkq1c5s8gjls581c";
   buildDepends = [ monadControl transformers ];
   meta = {
     homepage = "http://www.yesodweb.com/book/persistent";
-    description = "Thread-safe resource pools";
+    description = "Thread-safe resource pools. (deprecated)";
     license = self.stdenv.lib.licenses.bsd3;
     platforms = self.ghc.meta.platforms;
     maintainers = [