diff --git a/README.md b/README.md
index 336cdc0..66e6deb 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ If you don't have YunoHost, please consult [the guide](https://yunohost.org/#/in
 Kresus is an open-source libre self-hosted personal finance manager. It allows you to safely track your banking history, check your overall balance and know exactly how you are spending money using categories!
 
 
-**Shipped version:** 0.18.1~ynh8
+**Shipped version:** 0.18.1~ynh9
 
 ## Screenshots
 
diff --git a/README_fr.md b/README_fr.md
index 2cddf2b..c20a927 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -17,7 +17,7 @@ Si vous n'avez pas YunoHost, regardez [ici](https://yunohost.org/#/install) pour
 
 Kresus est un gestionnaire de finances personnelles gratuit et libre qui tourne sur votre serveur. Il récupère automatiquement et quotidiennement toutes vos nouvelles transactions bancaires et vous permet de les catégoriser, étudier via des graphiques, et établir un budget.
 
-**Version incluse :** 0.18.1~ynh8
+**Version incluse :** 0.18.1~ynh9
 
 ## Captures d'écran
 
diff --git a/manifest.json b/manifest.json
index e046027..60a4792 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Personal finance manager",
         "fr": "Outil personnel de gestion de finances"
     },
-    "version": "0.18.1~ynh8",
+    "version": "0.18.1~ynh9",
     "url": "https://framagit.org/kresusapp/kresus",
     "upstream": {
         "license": "AGPL-3.0-only",
diff --git a/scripts/install b/scripts/install
index 9b1a8f6..2dbeb4b 100644
--- a/scripts/install
+++ b/scripts/install
@@ -153,7 +153,7 @@ ynh_script_progression --message="Installing app..." --weight=1
 ynh_use_nodejs
 (
 	cd "$final_path"
-	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn install
+	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn install --production
 	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn cache clean --all
 	ynh_secure_remove --file="$final_path/.cache"
 	ynh_secure_remove --file="$final_path/.yarn"
diff --git a/scripts/upgrade b/scripts/upgrade
index 3ea632a..f86c2d4 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -189,7 +189,7 @@ ynh_use_nodejs
 	# linked to modules compiled for the previous version.
 	ynh_secure_remove --file="$final_path/node_modules"
 
-	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn install
+	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn install --production
 	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn cache clean --all
 	ynh_secure_remove --file="$final_path/.cache"
 	ynh_secure_remove --file="$final_path/.yarn"