diff --git a/ct/nginxproxymanager.sh b/ct/nginxproxymanager.sh
index c11fe02b4..51a302d92 100644
--- a/ct/nginxproxymanager.sh
+++ b/ct/nginxproxymanager.sh
@@ -28,13 +28,14 @@ function update_script() {
     exit
   fi
 
-  if ! command -v pnpm &>/dev/null; then
-    msg_info "Installing pnpm"
-    #export NODE_OPTIONS=--openssl-legacy-provider
-    $STD npm install -g pnpm@8.15
-    msg_ok "Installed pnpm"
+  if ! command -v yarn &>/dev/null; then
+    msg_info "Installing Yarn"
+    $STD npm install -g yarn
+    msg_ok "Installed Yarn"
   fi
 
+  export NODE_OPTIONS="--openssl-legacy-provider"
+
   RELEASE=$(curl -fsSL https://api.github.com/repos/NginxProxyManager/nginx-proxy-manager/releases/latest |
     grep "tag_name" |
     awk '{print substr($2, 3, length($2)-4) }')
@@ -49,9 +50,10 @@ function update_script() {
     sed -i "s|\"version\": \"0.0.0\"|\"version\": \"$RELEASE\"|" backend/package.json
     sed -i "s|\"version\": \"0.0.0\"|\"version\": \"$RELEASE\"|" frontend/package.json
     cd ./frontend || exit
-    $STD pnpm install
-    $STD pnpm upgrade
-    $STD pnpm run build
+    # Replace node-sass with sass in package.json before installation
+    sed -i 's/"node-sass".*$/"sass": "^1.92.1",/g' package.json
+    $STD yarn install --network-timeout 600000
+    $STD yarn build
   )
   msg_ok "Built Frontend"
 
@@ -71,7 +73,7 @@ function update_script() {
 
   msg_info "Setting up Environment"
   ln -sf /usr/bin/python3 /usr/bin/python
-  ln -sf /usr/bin/certbot /opt/certbot/bin/certbot
+  ln -sf /opt/certbot/bin/certbot /usr/local/bin/certbot
   ln -sf /usr/local/openresty/nginx/sbin/nginx /usr/sbin/nginx
   ln -sf /usr/local/openresty/nginx/ /etc/nginx
   sed -i 's+^daemon+#daemon+g' docker/rootfs/etc/nginx/nginx.conf
@@ -113,7 +115,12 @@ function update_script() {
   cp -r frontend/app-images/* /app/frontend/images
   cp -r backend/* /app
   cp -r global/* /app/global
-  $STD python3 -m pip install --no-cache-dir --break-system-packages certbot-dns-cloudflare
+
+  # Update Certbot and plugins in virtual environment
+  if [ -d /opt/certbot ]; then
+    $STD /opt/certbot/bin/pip install --upgrade pip setuptools wheel
+    $STD /opt/certbot/bin/pip install --upgrade certbot certbot-dns-cloudflare
+  fi
   msg_ok "Setup Environment"
 
   msg_info "Initializing Backend"
@@ -134,7 +141,8 @@ function update_script() {
 EOF
   fi
   cd /app || exit
-  $STD pnpm install
+  export NODE_OPTIONS="--openssl-legacy-provider"
+  $STD yarn install --network-timeout 600000
   msg_ok "Initialized Backend"
 
   msg_info "Starting Services"
diff --git a/install/nginxproxymanager-install.sh b/install/nginxproxymanager-install.sh
index 5958239de..664878130 100644
--- a/install/nginxproxymanager-install.sh
+++ b/install/nginxproxymanager-install.sh
@@ -13,8 +13,6 @@ setting_up_container
 network_check
 update_os
 
-setup_go
-
 msg_info "Installing Dependencies"
 $STD apt update
 $STD apt -y install \
@@ -31,12 +29,16 @@ $STD apt install -y \
   python3-dev \
   python3-pip \
   python3-venv \
-  python3-cffi \
-  python3-certbot \
-  python3-certbot-dns-cloudflare
-$STD pip3 install --break-system-packages certbot-dns-multi
+  python3-cffi
 msg_ok "Installed Python Dependencies"
 
+msg_info "Setting up Certbot"
+$STD python3 -m venv /opt/certbot
+$STD /opt/certbot/bin/pip install --upgrade pip setuptools wheel
+$STD /opt/certbot/bin/pip install certbot certbot-dns-cloudflare
+ln -sf /opt/certbot/bin/certbot /usr/local/bin/certbot
+msg_ok "Set up Certbot"
+
 VERSION="$(awk -F'=' '/^VERSION_CODENAME=/{ print $NF }' /etc/os-release)"
 
 msg_info "Installing Openresty"
@@ -53,7 +55,7 @@ $STD apt update
 $STD apt -y install openresty
 msg_ok "Installed Openresty"
 
-NODE_VERSION="22" NODE_MODULE="pnpm@latest" setup_nodejs
+NODE_VERSION="22" NODE_MODULE="yarn" setup_nodejs
 
 RELEASE=$(curl -fsSL https://api.github.com/repos/NginxProxyManager/nginx-proxy-manager/releases/latest |
   grep "tag_name" |
@@ -66,7 +68,6 @@ msg_ok "Downloaded Nginx Proxy Manager v${RELEASE}"
 
 msg_info "Setting up Environment"
 ln -sf /usr/bin/python3 /usr/bin/python
-ln -sf /usr/bin/certbot /usr/local/bin/certbot
 ln -sf /usr/local/openresty/nginx/sbin/nginx /usr/sbin/nginx
 ln -sf /usr/local/openresty/nginx/ /etc/nginx
 sed -i "s|\"version\": \"0.0.0\"|\"version\": \"$RELEASE\"|" backend/package.json
@@ -118,9 +119,11 @@ msg_ok "Set up Environment"
 
 msg_info "Building Frontend"
 cd ./frontend
-$STD pnpm install
-$STD pnpm upgrade
-$STD pnpm run build
+export NODE_OPTIONS="--openssl-legacy-provider"
+# Replace node-sass with sass in package.json before installation
+sed -i 's/"node-sass".*$/"sass": "^1.92.1",/g' package.json
+$STD yarn install --network-timeout 600000
+$STD yarn build
 cp -r dist/* /app/frontend
 cp -r app-images/* /app/frontend/images
 msg_ok "Built Frontend"
@@ -143,7 +146,8 @@ if [ ! -f /app/config/production.json ]; then
 EOF
 fi
 cd /app
-$STD pnpm install
+export NODE_OPTIONS="--openssl-legacy-provider"
+$STD yarn install --network-timeout 600000
 msg_ok "Initialized Backend"
 
 msg_info "Creating Service"