diff --git a/gitmon/api.py b/gitmon/api.py
index 79b5e10..0cb5f00 100644
--- a/gitmon/api.py
+++ b/gitmon/api.py
@@ -72,9 +72,12 @@ class GitHubApi:
             headers (dict): The response headers from the GitHub API.
 
         """
-        self.rate_reset = datetime.fromtimestamp(int(headers['x-ratelimit-reset']))
-        self.rate_remaining = int(headers['x-ratelimit-remaining'])
-        logger.info(f'{self.rate_remaining} calls remaining until {self.rate_reset} ({self.rate_reset - datetime.now()})')
+        try:
+            self.rate_reset = datetime.fromtimestamp(int(headers['x-ratelimit-reset']))
+            self.rate_remaining = int(headers['x-ratelimit-remaining'])
+            logger.info(f'{self.rate_remaining} calls remaining until {self.rate_reset} ({self.rate_reset - datetime.now()})')
+        except KeyError as e:
+            logger.warning(f'Could not parse headers: {str(e)}')
 
     def get_events(self, page=None):
         """Fetch GitHub events.