diff --git a/pkgs/development/libraries/haskell/Agda/default.nix b/pkgs/development/libraries/haskell/Agda/default.nix
index a9d05596495..ea32e635898 100644
--- a/pkgs/development/libraries/haskell/Agda/default.nix
+++ b/pkgs/development/libraries/haskell/Agda/default.nix
@@ -15,6 +15,7 @@ cabal.mkDerivation (self: {
     xhtml zlib
   ];
   buildTools = [ alex happy ];
+  jailbreak = true;
   meta = {
     homepage = "http://wiki.portal.chalmers.se/agda/";
     description = "A dependently typed functional programming language and proof assistant";