diff --git a/bit-array.cabal b/bit-array.cabal
--- a/bit-array.cabal
+++ b/bit-array.cabal
@@ -1,7 +1,7 @@
 name:
   bit-array
 version:
-  0.1.0
+  0.1.0.1
 synopsis:
   A bit array (aka bitset, bitmap, bit vector) API for numeric types
 description:
@@ -52,7 +52,7 @@
     placeholders == 0.1.*,
     -- general:
     numeric-qq >= 0.1.2 && < 0.2,
-    base >= 4.5 && < 4.8
+    base >= 4.5 && < 5
   default-extensions:
     Arrows, BangPatterns, ConstraintKinds, DataKinds, DefaultSignatures, DeriveDataTypeable, DeriveFunctor, DeriveGeneric, EmptyDataDecls, FlexibleContexts, FlexibleInstances, FunctionalDependencies, GADTs, GeneralizedNewtypeDeriving, ImpredicativeTypes, LambdaCase, LiberalTypeSynonyms, MagicHash, MultiParamTypeClasses, MultiWayIf, NoImplicitPrelude, NoMonomorphismRestriction, OverloadedStrings, PatternGuards, ParallelListComp, QuasiQuotes, RankNTypes, RecordWildCards, ScopedTypeVariables, StandaloneDeriving, TemplateHaskell, TupleSections, TypeFamilies, TypeOperators, UnboxedTuples
   default-language:
@@ -72,7 +72,7 @@
     doctest == 0.9.*,
     directory == 1.2.*,
     filepath == 1.3.*,
-    base >= 4.5 && < 5
+    base
   default-extensions:
     Arrows, BangPatterns, ConstraintKinds, DataKinds, DefaultSignatures, DeriveDataTypeable, DeriveFunctor, DeriveGeneric, EmptyDataDecls, FlexibleContexts, FlexibleInstances, FunctionalDependencies, GADTs, GeneralizedNewtypeDeriving, ImpredicativeTypes, LambdaCase, LiberalTypeSynonyms, MultiParamTypeClasses, MultiWayIf, NoImplicitPrelude, NoMonomorphismRestriction, OverloadedStrings, PatternGuards, ParallelListComp, QuasiQuotes, RankNTypes, RecordWildCards, ScopedTypeVariables, StandaloneDeriving, TemplateHaskell, TupleSections, TypeFamilies, TypeOperators
   default-language: