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-rw-r--r--pkgs/development/tools/parsing/happy/default.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/development/tools/parsing/happy/default.nix b/pkgs/development/tools/parsing/happy/default.nix
index ac3fb088bba..2bfc703deb7 100644
--- a/pkgs/development/tools/parsing/happy/default.nix
+++ b/pkgs/development/tools/parsing/happy/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "happy-1.14";
   src = fetchurl {
-    url = http://www.haskell.org/happy/dist/1.14/happy-1.14-src.tar.gz;
+    url = http://catamaran.labs.cs.uu.nl/dist/tarballs/happy-1.14-src.tar.gz;
     md5 = "501b5b63533b2e2838de18085e8c4492";
   };
   buildInputs = [ghc perl];