diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index 0c7d6a3ed8dd..f6726381df5c 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -952,6 +952,7 @@ self: super: {
   # Generate shell completion.
   cabal2nix = generateOptparseApplicativeCompletion "cabal2nix" super.cabal2nix;
   niv = generateOptparseApplicativeCompletion "niv" super.niv;
+  ormolu = generateOptparseApplicativeCompletion "ormolu" super.ormolu;
   stack = generateOptparseApplicativeCompletion "stack" super.stack;
 
   # musl fixes