--- a/ed25519.cabal
+++ b/ed25519.cabal
@@ -97,7 +97,7 @@
     build-depends:
       base        >= 4   && < 5,
       bytestring  >= 0.9 && < 0.11,
-      QuickCheck  >= 2.4 && < 2.9,
+      QuickCheck  >= 2.4 && < 2.10,
       ed25519
 
 --