diff --git a/lang/python313/Portfile b/lang/python313/Portfile
index 1d55fb742bc5a..47ccf54bd5c82 100644
--- a/lang/python313/Portfile
+++ b/lang/python313/Portfile
@@ -92,6 +92,7 @@ test.target         test
 destroot.target     frameworkinstall maninstall
 
 subport ${name}-freethreading {
+    PortGroup   compiler_blacklist_versions 1.0
     description-append (free threading)
     long_description-append This port has the experimental free threading\
                         feature enabled, i.e. there is no global interpreter\