diff --git a/config-value.cabal b/config-value.cabal
index 1e15ca4..879458a 100644
--- a/config-value.cabal
+++ b/config-value.cabal
@@ -40,7 +40,7 @@ library
     Config.Value
 
   build-depends:
-    base       >= 4.8     && < 4.21,
+    base       >= 4.8     && < 4.22,
     array      >= 0.4     && < 0.6,
     containers >= 0.5     && < 0.8,
     pretty     >= 1.1.1.0 && < 1.2,