diff --git a/src/Language/Bash/Word.hs b/src/Language/Bash/Word.hs
index ce36c4a..b9392a9 100644
--- a/src/Language/Bash/Word.hs
+++ b/src/Language/Bash/Word.hs
@@ -7,2 +7,3 @@
   , TypeSynonymInstances
+  , OverlappingInstances
   #-}
