diff --git a/mark b/mark
index 1ec2eb3..90da608 100755
--- a/mark
+++ b/mark
@@ -1,3 +1,3 @@
 #!/bin/bash
 
-sed -i "s/&&&BUILDVER&&&/$(date +'%Y%m%d-%H%M%S')/" src/lib/Sidebar.svelte
+sed -i "s/&&&BUILDVER&&&/$(date +'%y%m%d%H%M%S')/" src/lib/Sidebar.svelte