diff --git a/pyros_api.py b/pyros_api.py
index cb2e33d..6be5229 100755
--- a/pyros_api.py
+++ b/pyros_api.py
@@ -107,6 +107,9 @@ class PyrosAPI:
                 f"Server {self.host} doesn't respond. The website might be down.")
             exit(1)
         print(f"Request status code {request.status_code}")
+        if request.status_code == 401:
+            print("Bad token, disconnecting from webserver. Please authenticate yourself next time.")
+            self.delete_token()
         return request.json()
 
     def get_sequences_for_period(self, start_date: str, end_date: str) -> dict:
@@ -140,6 +143,11 @@ class PyrosAPI:
             exit(1)
         return response.content.decode("utf-8")
 
+    def delete_token(self):
+        if os.path.exists("TOKEN"):
+            os.remove("TOKEN")
+            print("Token deleted")
+
 
 @click.group()
 @click.option('--host', '-h', help='host name (example: http://localhost:8000 or http://pyros.omp.eu) without last slash')
--
libgit2 0.21.2