1 files changed, 1 insertions, 0 deletions
diff --git a/default.nix b/default.nix
index bb9f220f4..91d963604 100644
--- a/default.nix
+++ b/default.nix
@@ -67,6 +67,7 @@ stdenv.mkDerivation rec {
     python
     rsync
     which
+    ocamlPackages.ounit
 
   ] else []) ++ (if lib.inNixShell then [
     ocamlPackages.merlin