diff --git a/runner/main/modules/docker-php/config.template.php b/runner/main/modules/docker-php/config.template.php
index b1fb4f2..8435af4 100644
--- a/runner/main/modules/docker-php/config.template.php
+++ b/runner/main/modules/docker-php/config.template.php
@@ -49,7 +49,7 @@
 }
 
 // Skip language upgrade during the on-sync period.
-$CFG->skiplangupgrade = false;
+$CFG->skiplangupgrade = true;
 
 // Enable tests needing language install/upgrade
 // only if we have language upgrades enabled (aka,