diff --git a/.github/workflows/haskell.yml b/.github/workflows/haskell.yml
index e1d1ed4b6..a1ff30ef2 100644
--- a/.github/workflows/haskell.yml
+++ b/.github/workflows/haskell.yml
@@ -37,7 +37,7 @@ jobs:
       name: Cache ~/.cabal/store
       with:
         path: ~/.cabal/store
-        key: ${{ runner.os }}-${{ matrix.ghc }}-v3-cabal-store
+        key: ${{ runner.os }}-${{ matrix.ghc }}-v4-cabal-store
 
     - uses: actions/cache@v1
       name: Cache dist-newstyle
diff --git a/semantic-source/src/Source/Loc.hs b/semantic-source/src/Source/Loc.hs
index 3007c42da..8bd1c9fe9 100644
--- a/semantic-source/src/Source/Loc.hs
+++ b/semantic-source/src/Source/Loc.hs
@@ -7,13 +7,13 @@ module Source.Loc
 ) where
 
 import Control.DeepSeq (NFData)
+import Data.Aeson (ToJSON(..), object, (.=))
 import Data.Hashable (Hashable)
 import Data.Monoid.Generic
 import GHC.Generics (Generic)
 import Prelude hiding (span)
 import Source.Range
 import Source.Span
-import Data.Aeson (ToJSON(..), object, (.=))
 
 data Loc = Loc
   { byteRange :: {-# UNPACK #-} !Range
diff --git a/semantic-source/src/Source/Range.hs b/semantic-source/src/Source/Range.hs
index 9687c553e..4ec414415 100644
--- a/semantic-source/src/Source/Range.hs
+++ b/semantic-source/src/Source/Range.hs
@@ -1,4 +1,4 @@
-{-# LANGUAGE DeriveAnyClass, DeriveGeneric, RankNTypes, NamedFieldPuns, OverloadedStrings #-}
+{-# LANGUAGE DeriveAnyClass, DeriveGeneric, RankNTypes, NamedFieldPuns #-}
 module Source.Range
 ( Range(..)
 , point