diff --git a/pkgs/development/libraries/haskell/hledger-web/default.nix b/pkgs/development/libraries/haskell/hledger-web/default.nix
index 0875c09db86..eee84c338e6 100644
--- a/pkgs/development/libraries/haskell/hledger-web/default.nix
+++ b/pkgs/development/libraries/haskell/hledger-web/default.nix
@@ -20,6 +20,7 @@ cabal.mkDerivation (self: {
     yesodCore yesodStatic
   ];
   testDepends = [ hspec yesod yesodTest ];
+  jailbreak = true;
   doCheck = false;
   meta = {
     homepage = "http://hledger.org";