--- a/unliftio-core.cabal
+++ b/unliftio-core.cabal
@@ -30,6 +30,6 @@ library
   hs-source-dirs:
       src
   build-depends:
-      base >=4.5 && <4.14
+      base >=4.5 && <4.16
     , transformers >=0.2 && <0.6
   default-language: Haskell2010
