diff --git a/ruby.yaml b/ruby.yaml
index 6eb9b97..fb62dc3 100644
--- a/ruby.yaml
+++ b/ruby.yaml
@@ -20,9 +20,11 @@ data:
         - buildrequires:
             # platform: [] is recommended.
             # But set "-f28" to avoid the build failure as a temporary workflow.
-            platform: [-f28]
+            # Set "-f29" temporarily to avoid below issue.
+            # https://bugzilla.redhat.com/show_bug.cgi?id=1705543
+            platform: [-f28, -f29]
           requires:
-            platform: [-f28]
+            platform: [-f28, -f29]
     components:
         # SRPMs
         rpms: