diff --git a/check_ports.sh b/check_ports.sh
index c82aa6a..548c88a 100755
--- a/check_ports.sh
+++ b/check_ports.sh
@@ -1,5 +1,7 @@
+#!/bin/bash
+
 START=0
 END=9
 for ((i=START;i<=END;i++)); do
     lsof -i tcp:500$i
-done
\ No newline at end of file
+done
diff --git a/requirements.txt b/requirements.txt
index cdc8213..21d7f55 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,7 @@
 Flask==1.1.2
+Jinja2==3.0.3
+werkzeug==2.0.2
+itsdangerous==2.0.1
 fastapi==0.61.1
 uvicorn==0.12.0
 pyramid==1.10.4
@@ -6,4 +9,4 @@ waitress==1.4.4
 tornado==6.0.4
 Flask-SocketIO==4.3.1
 eventlet==0.28.0
-websockets==8.1
\ No newline at end of file
+websockets==8.1