diff --git a/ct/streamlink-webui.sh b/ct/streamlink-webui.sh
index 092a987..947eaef 100644
--- a/ct/streamlink-webui.sh
+++ b/ct/streamlink-webui.sh
@@ -41,10 +41,11 @@ function update_script() {
     rm -rf /opt/${APP}
     fetch_and_deploy_gh_release "CrazyWolf13/streamlink-webui"
     cd /opt/"${APPLICATION}"/backend/src
-    pip install -r requirements.txt
+    $STD pip install -r requirements.txt
     cd ../../frontend/src
-    npm install
-    yarn build
+    $STD npm install
+    $STD npm install -g yarn
+    $STD yarn build
     msg_ok "Updated $APP to v${RELEASE}"
 
     msg_info "Starting $APP"
diff --git a/install/streamlink-webui-install.sh b/install/streamlink-webui-install.sh
index 6e89398..e597cc3 100644
--- a/install/streamlink-webui-install.sh
+++ b/install/streamlink-webui-install.sh
@@ -30,10 +30,11 @@ msg_ok "Setup NodeJS"
 msg_info "Setup ${APPLICATION}"
 fetch_and_deploy_gh_release "CrazyWolf13/streamlink-webui"
 cd /opt/"${APPLICATION}"/backend/src
-pip install -r requirements.txt
+$STD pip install -r requirements.txt
 cd ../../frontend/src
-npm install
-yarn build
+$STD npm install
+$STD npm install -g yarn
+$STD yarn build
 msg_ok "Setup ${APPLICATION}"
 
 # Creating Service (if needed)