--- a/quickcheck-classes.cabal
+++ b/quickcheck-classes.cabal
@@ -94,8 +94,8 @@ library
   build-depends:
     , base >= 4.5 && < 5
     , QuickCheck >= 2.7
-    , transformers >= 0.3 && < 0.6
-    , primitive >= 0.6.4 && < 0.8
+    , transformers >= 0.3 && < 0.7
+    , primitive >= 0.6.4 && < 0.9
     , primitive-addr >= 0.1.0.2 && < 0.2
     , containers >= 0.4.2.1
     , quickcheck-classes-base >=0.6.2 && <0.7
