diff --git a/src/helpers.py b/src/helpers.py
index 3b5781c88..dc03010ee 100644
--- a/src/helpers.py
+++ b/src/helpers.py
@@ -2,6 +2,7 @@
 import json
 import os
 import pathlib
+import time
 from typing import Union
 from urllib3 import Retry
 
@@ -14,16 +15,47 @@
 # local imports
 from src.logger import log
 
+# constants
+HTTPS = 'https://'
+
 # setup requests sessions
 retry_adapter = HTTPAdapter(max_retries=Retry(total=5, backoff_factor=1))
 
 # cloudscraper session
 cs = cloudscraper.CloudScraper()  # CloudScraper inherits from requests.Session
-cs.mount('https://', retry_adapter)
+cs.mount(HTTPS, retry_adapter)
 
 # requests session
 s = requests.Session()
-s.mount('https://', retry_adapter)
+s.mount(HTTPS, retry_adapter)
+
+
+class RateLimitedSession(requests.Session):
+    """
+    A requests.Session subclass that implements rate limiting.
+    """
+    def __init__(self, calls_per_minute=60):
+        super().__init__()
+        self.calls_per_minute = calls_per_minute
+        self.min_interval = 60.0 / calls_per_minute  # seconds between calls
+        self.last_call_time = 0
+
+    def request(self, *args, **kwargs):
+        # Calculate time since last call
+        elapsed = time.time() - self.last_call_time
+
+        # If we need to wait, sleep for the remaining time
+        if elapsed < self.min_interval:
+            time.sleep(self.min_interval - elapsed)
+
+        # Make the request
+        self.last_call_time = time.time()
+        return super().request(*args, **kwargs)
+
+
+# readthedocs rate-limited session (60 authenticated requests per minute)
+rtd_s = RateLimitedSession(calls_per_minute=60)
+rtd_s.mount(HTTPS, retry_adapter)
 
 
 def debug_print(
diff --git a/src/updater.py b/src/updater.py
index bd8fac789..dd65d7b37 100644
--- a/src/updater.py
+++ b/src/updater.py
@@ -354,7 +354,7 @@ def readthedocs_loop(url: str, file_path: str) -> list:
     results = []
 
     while True:
-        response = helpers.s.get(url=url, headers=headers)
+        response = helpers.rtd_s.get(url=url, headers=headers)
         try:
             data = response.json()
         except requests.exceptions.JSONDecodeError: