diff --git a/pkgs/development/libraries/haskell/postgresql-simple/default.nix b/pkgs/development/libraries/haskell/postgresql-simple/default.nix
index 0a40cdf7a96..926668039ab 100644
--- a/pkgs/development/libraries/haskell/postgresql-simple/default.nix
+++ b/pkgs/development/libraries/haskell/postgresql-simple/default.nix
@@ -5,8 +5,8 @@
 
 cabal.mkDerivation (self: {
   pname = "postgresql-simple";
-  version = "0.3.3.0";
-  sha256 = "0srkalfg41gdnzwwa2bmwwrcdqnw13f7b94wv4d5a6sg6yf1ry1l";
+  version = "0.3.3.1";
+  sha256 = "0fqndncfy6yg27ndfaqyqd2q9wrbabkdq388s4q9m7maj222xlb9";
   buildDepends = [
     attoparsec blazeBuilder blazeTextual postgresqlLibpq text time
     transformers vector