diff --git a/ghc-utf8-string.spec b/ghc-utf8-string.spec
index ea419dc..ac6d080 100644
--- a/ghc-utf8-string.spec
+++ b/ghc-utf8-string.spec
@@ -42,7 +42,7 @@ This package provides the Haskell %{pkg_name} library development files.
 
 %prep
 %setup -q -n %{pkgver}
-cabal-tweak-dep-ver base '< 4.9' '< 4.10'
+cabal-tweak-dep-ver base '< 4.9' '< 4.11'
 
 
 %build