diff --git a/scripts/_common.sh b/scripts/_common.sh
index a43d509..52cf8dd 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -26,7 +26,7 @@ ynh_composer_exec () {
 	# Manage arguments with getopts
 	ynh_handle_getopts_args "$@"
 	workdir="${workdir:-$final_path}"
-	phpversion="${phpversion:-7.3}"
+	phpversion="${phpversion:-7.0}"
 
 	COMPOSER_HOME="$workdir/.composer" \
 		php${phpversion} "$workdir/composer.phar" $commands \
@@ -46,7 +46,7 @@ ynh_install_composer () {
 	# Manage arguments with getopts
 	ynh_handle_getopts_args "$@"
 	workdir="${workdir:-$final_path}"
-	phpversion="${phpversion:-7.3}"
+	phpversion="${phpversion:-7.0}"
 
 	curl -sS https://getcomposer.org/installer \
 		| COMPOSER_HOME="$workdir/.composer" \