diff --git a/pkgs/development/libraries/haskell/async/2.0.1.4.nix b/pkgs/development/libraries/haskell/async/2.0.1.4.nix
index 5dd76b4d6e0..24fa64931a3 100644
--- a/pkgs/development/libraries/haskell/async/2.0.1.4.nix
+++ b/pkgs/development/libraries/haskell/async/2.0.1.4.nix
@@ -6,6 +6,7 @@ cabal.mkDerivation (self: {
   sha256 = "1hi40bjwpl65mz7zj0sgh16bp9dwafbm5ysi2q8fzwwq5l0zxpa1";
   buildDepends = [ stm ];
   testDepends = [ HUnit testFramework testFrameworkHunit ];
+  jailbreak = true;
   meta = {
     homepage = "https://github.com/simonmar/async";
     description = "Run IO operations asynchronously and wait for their results";