diff --git a/ghc-old-locale.spec b/ghc-old-locale.spec
index f433759..577aaa5 100644
--- a/ghc-old-locale.spec
+++ b/ghc-old-locale.spec
@@ -38,7 +38,7 @@ 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