diff --git a/ghc-deepseq-generics.spec b/ghc-deepseq-generics.spec
index 9671048..ff44975 100644
--- a/ghc-deepseq-generics.spec
+++ b/ghc-deepseq-generics.spec
@@ -59,7 +59,8 @@ files.
 
 %prep
 %setup -q -n %{pkg_name}-%{version}
-cabal-tweak-dep-ver ghc-prim '< 0.4' '< 0.5'
+cabal-tweak-dep-ver base '< 4.9' '< 4.10'
+cabal-tweak-dep-ver ghc-prim '< 0.4' '< 0.6'
 
 
 %build