diff --git a/conf/intel/portage/package.keywords/00-sabayon.package.keywords b/conf/intel/portage/package.keywords/00-sabayon.package.keywords
index 3f2ab64e..8db8d250 100644
--- a/conf/intel/portage/package.keywords/00-sabayon.package.keywords
+++ b/conf/intel/portage/package.keywords/00-sabayon.package.keywords
@@ -11,6 +11,9 @@ dev-lang/tcl -~amd64 -~x86
 dev-lang/tk -~amd64 -~x86
 dev-lang/ghc -~amd64 -~x86
 dev-lang/ruby -~amd64 -~x86
+# sci-mathematics/maxima needs texinfo <5.0
+# stick texinfo to stable to avoid matter bump it
+sys-apps/texinfo -~amd64 -~x86
 
 # Apache is a critical component and 2.2 is still
 # "good enough", 2.4 isn't yet stabilized