diff --git a/HowtoDebian/MigrationStretchBuster.md b/HowtoDebian/MigrationStretchBuster.md
index c0b56720..580d39db 100644
--- a/HowtoDebian/MigrationStretchBuster.md
+++ b/HowtoDebian/MigrationStretchBuster.md
@@ -174,4 +174,18 @@ Il faut mettre à jour si le projet utilise bundle.
 
 ~~~
 $ RAILS_ENV=production bundle install --redownload
-~~~
\ No newline at end of file
+~~~
+
+## Squid
+
+Il faut s'assurer d'avoir l'override systemd.
+
+```
+# systemctl edit squid
+# systemd override for Squid
+[Service]
+ExecStart=
+ExecStart=/usr/sbin/squid -sYC -f /etc/squid/evolinux-defaults.conf
+# systemctl daemon-reload
+# systemctl restart squid
+```
\ No newline at end of file