diff --git a/scripts/upgrade b/scripts/upgrade
index 7a28d27..2808946 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -154,13 +154,12 @@ yunohost service add $app --description="Responsive web-based XMPP client" --log
 #=================================================
 ynh_script_progression --message="Installing Composer..." --weight=1
 
-curl -sS https://getcomposer.org/installer \
-	| COMPOSER_HOME="$final_path/.composer" \
-	php${phpversion} -- --quiet --install-dir="$final_path" --version=2.0.9
-
-COMPOSER_HOME="$final_path/.composer" \
-		php${phpversion} "$final_path/composer.phar" install --no-dev $install_args \
-		-d "$final_path" --quiet --no-interaction
+pushd "$final_path"
+	ynh_exec_warn_less curl -sS https://getcomposer.org/installer | php$phpversion -- --version="1.10.16" --install-dir="$final_path" \
+		&& php$phpversion composer.phar config --global discard-changes true --quiet \
+		&& php$phpversion composer.phar install --no-interaction --quiet \
+		&& php$phpversion composer.phar movim:migrate --quiet
+popd
 
 #=================================================
 # Set-up database