diff --git a/wireguard.sh b/wireguard.sh
index b6a329f..2b3fbdc 100644
--- a/wireguard.sh
+++ b/wireguard.sh
@@ -7,8 +7,8 @@ test "$(id -u)" = 0 || exec sudo "$0"
 
 
 # if needed install
-dpkg -l | grep wireguard-tools || apt-get install -y wireguard-tools
-dpkg -l | grep python3-qrcodegen || apt-get install -y python3-qrcodegen
+dpkg -l | grep wireguard-tools || { apt-get update; apt-get install -y wireguard-tools; }
+dpkg -l | grep python3-qrcodegen || { apt-get update; apt-get install -y python3-qrcodegen; }
 test -f /bin/qrcode || {
   cat >/bin/qrcode << 'PYTHON'
 #!/usr/bin/python3