diff --git a/elisp/ghc-pkg.el b/elisp/ghc-pkg.el
index 62e8c2e..79e57b8 100644
--- a/elisp/ghc-pkg.el
+++ b/elisp/ghc-pkg.el
@@ -2,4 +2,4 @@
   "ghc"
   2.0.0
   "Sub mode for Haskell mode"
-  nil)
+  '((haskell-mode "13.0")))