diff --git a/haskell-gi.cabal b/haskell-gi.cabal
--- a/haskell-gi.cabal
+++ b/haskell-gi.cabal
@@ -1,5 +1,5 @@
 name:                haskell-gi
-version:             0.22.0
+version:             0.22.1
 synopsis:            Generate Haskell bindings for GObject Introspection capable libraries
 description:         Generate Haskell bindings for GObject Introspection capable libraries. This includes most notably
                      Gtk+, but many other libraries in the GObject ecosystem provide introspection data too.
diff --git a/lib/Data/GI/CodeGen/CabalHooks.hs b/lib/Data/GI/CodeGen/CabalHooks.hs
--- a/lib/Data/GI/CodeGen/CabalHooks.hs
+++ b/lib/Data/GI/CodeGen/CabalHooks.hs
@@ -79,10 +79,7 @@
       cL' = ((fromJust . condLibrary) gpd) {condTreeData = ctd'}
       gpd' = gpd {condLibrary = Just cL'}
 
-  alreadyDone <- doesFileExist (fromMaybe "" outputDir
-                                </> "GI" </> T.unpack (ucFirst name) <.> "hs")
-  when (not alreadyDone) $ do
-    void $ writeModuleTree verbosity outputDir m
+  void $ writeModuleTree verbosity outputDir m
 
   lbi <- defaultConfHook (gpd', hbi) flags