diff --git a/lib.nix b/lib.nix
index 3f5f7d0..7cfe9ad 100644
--- a/lib.nix
+++ b/lib.nix
@@ -35,6 +35,7 @@ let
             rust-mode
             haskell-mode
             qml-mode
+            tuareg
             envrc
             eat
             notmuch