diff --git a/what4/src/What4/Utils/Versions.hs b/what4/src/What4/Utils/Versions.hs
index 9c395bf8..b074226d 100644
--- a/what4/src/What4/Utils/Versions.hs
+++ b/what4/src/What4/Utils/Versions.hs
@@ -1,11 +1,8 @@
-{-# LANGUAGE CPP #-}
 {-# LANGUAGE DeriveLift #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE StandaloneDeriving #-}
 {-# LANGUAGE TemplateHaskell #-}
 
-{-# OPTIONS_GHC -Wno-orphans #-}
-
 module What4.Utils.Versions where
 
 import qualified Config as Config
@@ -22,17 +19,6 @@ import           Instances.TH.Lift ()
 import           Language.Haskell.TH
 import           Language.Haskell.TH.Lift
 
--- NB, orphan instances :-(
--- See also https://github.com/fosskers/versions/issues/68
-#if MIN_VERSION_versions(6,0,0)
-deriving instance Lift Versions.Chunk
-deriving instance Lift Versions.Chunks
-deriving instance Lift Versions.Release
-#else
-deriving instance Lift Versions.VUnit
-#endif
-deriving instance Lift Versions.Version
-
 ver :: Text -> Q Exp
 ver nm =
   case Versions.version nm of
diff --git a/what4/what4.cabal b/what4/what4.cabal
index ab665e78..c20a85fb 100644
--- a/what4/what4.cabal
+++ b/what4/what4.cabal
@@ -135,7 +135,7 @@ library
     unordered-containers >= 0.2.10,
     utf8-string >= 1.0.1,
     vector >= 0.12.1,
-    versions >= 4.0 && < 6.1,
+    versions >= 6.0.2 && < 6.1,
     zenc >= 0.1.0 && < 0.2.0,
     ghc-prim >= 0.5.2