diff --git a/filepath.cabal b/filepath.cabal
index 1fe1da50..d8c6c023 100644
--- a/filepath.cabal
+++ b/filepath.cabal
@@ -91,7 +91,7 @@ library
 
   default-language: Haskell2010
   build-depends:
-    , base              >=4.12.0.0      && <4.20
+    , base              >=4.12.0.0      && <4.21
     , bytestring        >=0.11.3.0
     , deepseq
     , exceptions