diff --git a/ListLike.cabal b/ListLike.cabal
--- a/ListLike.cabal
+++ b/ListLike.cabal
@@ -1,5 +1,5 @@
 Name: ListLike
-Version: 4.7
+Version: 4.7.1
 License: BSD3
 Maintainer: David Fox <dsf@seereason.com>
 Author: John Goerzen
@@ -7,7 +7,7 @@
 license-file: COPYRIGHT
 extra-source-files: COPYRIGHT, README.md
 Category: list, string, text, bytestring, vector
-Cabal-Version: >= 1.8
+Cabal-Version: >= 1.10
 Build-Type: Simple
 homepage: http://github.com/ddssff/listlike
 synopsis: Generalized support for list-like structures
@@ -25,6 +25,7 @@
 Tested-With: GHC == 8.8.1, GHC == 8.6.5, GHC == 8.4.4, GHC == 8.2.2, GHC == 8.0.2, GHC == 7.10.2
 
 Library
+  default-language: Haskell2010
   GHC-Options: -Wall
   Hs-Source-Dirs: src
   Exposed-Modules: Data.ListLike
@@ -64,6 +65,7 @@
     Build-Depends: semigroups >= 0.16 && < 0.20
 
 Test-suite listlike-tests
+  default-language: Haskell2010
   GHC-Options: -O2
   Hs-source-dirs: testsrc
   Main-is:        runtests.hs
diff --git a/testsrc/TestInfrastructure.hs b/testsrc/TestInfrastructure.hs
--- a/testsrc/TestInfrastructure.hs
+++ b/testsrc/TestInfrastructure.hs
@@ -23,7 +23,7 @@
 module TestInfrastructure where
 
 import Test.QuickCheck
---import Test.QuickCheck.Test
+import Test.QuickCheck.Test
 import qualified Data.ByteString as BS
 import qualified Data.ByteString.Lazy as BSL
 import qualified Data.ListLike as LL