diff --git a/pkgs/development/libraries/haskell/hashtables/default.nix b/pkgs/development/libraries/haskell/hashtables/default.nix
index 4fdff950809..ca0e2e529c5 100644
--- a/pkgs/development/libraries/haskell/hashtables/default.nix
+++ b/pkgs/development/libraries/haskell/hashtables/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "hashtables";
-  version = "1.1.2.0";
-  sha256 = "1q0nzsc4x317r7b93b4sj4yfpsdjmqkvc54q62n56kgq9cy4y7qh";
+  version = "1.1.2.1";
+  sha256 = "1166baqalpp9v735821drjvyasr44p4znbcs7njyr09fx87r23f5";
   buildDepends = [ hashable primitive vector ];
   meta = {
     homepage = "http://github.com/gregorycollins/hashtables";