diff --git a/unlambda.spec b/unlambda.spec
index 82c57a6..d095990 100644
--- a/unlambda.spec
+++ b/unlambda.spec
@@ -1,4 +1,4 @@
-# generated by cabal-rpm-2.0.6
+# generated by cabal-rpm-2.0.9
 # https://docs.fedoraproject.org/en-US/packaging-guidelines/Haskell/
 
 %global pkg_name unlambda
@@ -54,6 +54,7 @@ This package provides the Haskell %{name} library development files.
 %package -n ghc-%{name}-doc
 Summary:        Haskell %{name} library documentation
 BuildArch:      noarch
+Requires:       ghc-filesystem
 
 %description -n ghc-%{name}-doc
 This package provides the Haskell %{name} library documentation.