diff --git a/pkgs/development/tools/haskell/codex/default.nix b/pkgs/development/tools/haskell/codex/default.nix
index f0c9a6a6aaa..0a6cb2ca1a4 100644
--- a/pkgs/development/tools/haskell/codex/default.nix
+++ b/pkgs/development/tools/haskell/codex/default.nix
@@ -10,6 +10,7 @@ cabal.mkDerivation (self: {
   sha256 = "0dsc5dx5zcxf5wd2qf6gqzr8d613z1gkllmzzkbny3lxa512crsw";
   isLibrary = true;
   isExecutable = true;
+  jailbreak = true;
   buildDepends = [
     Cabal downloadCurl either filepath hackageDb MissingH monadLoops
     tar text transformers yaml zlib