diff --git a/master.cfg b/master.cfg
index 91d732d..fd4ddd6 100644
--- a/master.cfg
+++ b/master.cfg
@@ -325,7 +325,8 @@ add_builder(c,
             ['windows', 'macOS_10_15', 'linux_centos7'],
             generic_builder,
             branch='blender-v2.91-release',
-            hour=1)
+            hour=1,
+            use_nightly_builder=False)
 add_builder(c,
             'lts_283',
             ['windows', 'macOS_10_13', 'linux_centos7'],