diff --git a/pkgs/development/tools/parsing/happy/1.18.8.nix b/pkgs/development/tools/parsing/happy/1.18.8.nix
new file mode 100644
index 00000000000..b1ba0b165dd
--- /dev/null
+++ b/pkgs/development/tools/parsing/happy/1.18.8.nix
@@ -0,0 +1,21 @@
+{ cabal, mtl, perl }:
+
+cabal.mkDerivation (self: {
+  pname = "happy";
+  version = "1.18.8";
+  sha256 = "1mqdawxszmdk71fbl8ljxz7jyhai00sflaw0gahp039n44mrspam";
+  isLibrary = false;
+  isExecutable = true;
+  buildDepends = [ mtl ];
+  buildTools = [ perl ];
+  meta = {
+    homepage = "http://www.haskell.org/happy/";
+    description = "Happy is a parser generator for Haskell";
+    license = self.stdenv.lib.licenses.bsd3;
+    platforms = self.ghc.meta.platforms;
+    maintainers = [
+      self.stdenv.lib.maintainers.andres
+      self.stdenv.lib.maintainers.simons
+    ];
+  };
+})
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 4f7da41cdb4..366bf2e904e 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -150,7 +150,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
     random       = self.random_1_0_0_3; # 7.2 ok, 7.3 ok
     cabalInstall = self.cabalInstall_0_10_2; # 7.2 fails, 7.3 fails
     alex         = self.alex_3_0_1; # 7.2 ok, 7.3 ok
-    happy        = self.happy_1_18_6; # 7.2 ok, 7.3 ok
+    happy        = self.happy_1_18_8; # 7.2 ok, 7.3 ok
     haddock      = self.haddock_2_9_2; # 7.2 fails, 7.3 fails
   };
 
@@ -1414,7 +1414,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
   happy_1_18_4 = callPackage ../development/tools/parsing/happy/1.18.4.nix {};
   happy_1_18_5 = callPackage ../development/tools/parsing/happy/1.18.5.nix {};
   happy_1_18_6 = callPackage ../development/tools/parsing/happy/1.18.6.nix {};
-  happy = self.happy_1_18_6;
+  happy_1_18_8 = callPackage ../development/tools/parsing/happy/1.18.8.nix {};
+  happy = self.happy_1_18_8;
 
   happyMeta = callPackage ../development/tools/haskell/happy-meta {};