diff --git a/scripts/install b/scripts/install
index e0d7297..af3e895 100644
--- a/scripts/install
+++ b/scripts/install
@@ -87,7 +87,7 @@ popd
 pushd $install_dir/admin
     ynh_use_nodejs
 
-    ynh_exec_warn_less env $ynh_node_load_PATH ETHERPAD_PRODUCTION=true COREPACK_ENABLE_DOWNLOAD_PROMPT=0 pnpm run build-copy
+    ynh_exec_warn_less env $ynh_node_load_PATH ETHERPAD_PRODUCTION=true COREPACK_ENABLE_DOWNLOAD_PROMPT=0 pnpm install && pnpm run build-copy
 popd
 
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