diff --git a/gren.cabal b/gren.cabal
index bd204938..4dfa52f6 100644
--- a/gren.cabal
+++ b/gren.cabal
@@ -200,7 +200,7 @@ Common gren-common
     Build-depends:
         ansi-terminal >= 0.11 && < 0.12,
         ansi-wl-pprint >= 0.6.8 && < 0.7,
-        base >=4.16 && <5,
+        base >= 4.17 && <5,
         binary >= 0.8 && < 0.9,
         bytestring >= 0.11 && < 0.12,
         containers >= 0.6 && < 0.7,