diff --git a/scripts/_common.sh b/scripts/_common.sh
index cbc1622..cd2cc42 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -7,6 +7,8 @@
 # dependencies used by the app
 pkg_dependencies="postgresql"
 
+YNH_COMPOSER_VERSION="2.0.13"
+
 # dependencies used by the app
 YNH_PHP_VERSION="7.3"
 
diff --git a/scripts/install b/scripts/install
index 3f7dfc8..e73fb8f 100755
--- a/scripts/install
+++ b/scripts/install
@@ -111,6 +111,13 @@ ynh_script_progression --message="Configuring Galette..." --weight=1
 
 ynh_add_config --template="../conf/config.inc.php.dist" --destination="$final_path/config/config.inc.php"
 
+#=================================================
+# Install PHP dependencies using composer
+#=================================================
+ynh_script_progression --message="Configuring Composer..." --weight=1
+
+ynh_install_composer
+
 #=================================================
 # GENERIC FINALIZATION
 #=================================================