diff --git a/Unique.cabal b/Unique.cabal
--- a/Unique.cabal
+++ b/Unique.cabal
@@ -1,6 +1,6 @@
 cabal-version: 2.0
 name:          Unique
-version:       0.4.7.8
+version:       0.4.7.9
 license:       BSD3
 license-file:  LICENSE
 maintainer:    ualinuxcn@gmail.com
@@ -26,7 +26,7 @@
     default-language: Haskell2010
     ghc-options:      -Wall
     build-depends:
-        base >=4.0 && <=4.15,
+        base >=4.0 && < 5,
         containers >=0.5.0.0 && <=0.7,
         extra >=1.6.2 && <=1.8,
         hashable >= 1.2.6 && <=1.4,