diff --git a/duo_client/admin.py b/duo_client/admin.py
index 7c3d316..3ba041b 100644
--- a/duo_client/admin.py
+++ b/duo_client/admin.py
@@ -517,6 +517,8 @@ def get_authentication_log(self, api_version=1, **kwargs):
             # Sanity check maxtime as unix timestamp, then transform to string
             params['maxtime'] = '{:d}'.format(int(params['maxtime']))
 
+            if "limit" in params:
+                params["limit"] = f"{int(params['limit'])}"
 
         response = self.json_api_call(
             'GET',