diff --git a/text-icu-normalized.cabal b/text-icu-normalized.cabal
--- a/text-icu-normalized.cabal
+++ b/text-icu-normalized.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                text-icu-normalized
-version:             0.1.5.1
+version:             0.1.6
 synopsis:            Dealing with Strict Text in NFC normalization.
 description:         Handle Text in NFC normalization.
 homepage:            https://gitlab.com/theunixman/text-icu-normalized
@@ -25,7 +25,7 @@
                      DeriveGeneric
                      UnicodeSyntax
   build-depends:
-                base >=4.8 && <4.9,
+                base >=4.8 && <5.0,
                 base-unicode-symbols,
                 bytestring,
                 lens,