diff --git a/general.conf b/general.conf
index 2d40ce4..531a01e 100644
--- a/general.conf
+++ b/general.conf
@@ -9,7 +9,7 @@ hashed_directories = True
 
 # RUNROOT settings
 runroot_channel = 'compose'
-runroot_tag = 'f39-build'
+runroot_tag = 'f40-build'
 
 # PKGSET
 pkgset_source = 'koji' # koji, repos