diff --git a/app.py b/app.py
index 00b5fab..a44a0e1 100644
--- a/app.py
+++ b/app.py
@@ -25,9 +25,10 @@ class Channel(Resource):
         args = parser.parse_args()
         channel = args['channel']
         # Save the new channel to file
-        with open("channel_url.txt", "w") as f:
+        with open("/var/channel_url.txt", "w") as f:
             f.write(channel)
         # Update the current channel
+        global current_channel
         current_channel = channel
         return jsonify({"message": "Channel updated"})
 
@@ -36,9 +37,10 @@ class GetNewChannel(Resource):
         r = requests.get("https://nixos.org/channels/nixos-21.11")
         channel = r.url
         # Save the new channel to file
-        with open("channel_url.txt", "w") as f:
+        with open("/var/channel_url.txt", "w") as f:
             f.write(channel)
         # Update the current channel
+        global current_channel
         current_channel = channel
         return jsonify({"message": "Channel updated", "channel": channel})
 
diff --git a/channel_url.txt b/channel_url.txt
index 58dc96c..06d62e0 100644
--- a/channel_url.txt
+++ b/channel_url.txt
@@ -1 +1 @@
-https://nixos.org/channels/nixos-21.05
\ No newline at end of file
+https://nixos.org/channels/nixos-21.11
\ No newline at end of file