diff --git a/glibmm2.68.spec b/glibmm2.68.spec
index 6be58ac..8419ca7 100644
--- a/glibmm2.68.spec
+++ b/glibmm2.68.spec
@@ -52,7 +52,7 @@ developing glibmm applications.
 Summary:        Documentation for %{name}, includes full API docs
 BuildArch:      noarch
 Requires:       %{name} = %{version}-%{release}
-Requires:       libsigc++20-doc
+Requires:       libsigc++30-doc
 
 %description    doc
 This package contains the full API documentation for %{name}.