diff --git a/main.py b/main.py
index fa304d7..db19a48 100644
--- a/main.py
+++ b/main.py
@@ -147,8 +147,13 @@ async def check_updates():
         for page in count(1):
             logging.warning(f'Loading page {page}')
             post_versions_page = await e621.get_post_versions(last_post_version, page)
-            post_versions += post_versions_page
-            if not last_post_version or not post_versions_page:
+            finish_loop = False
+            for post_version in post_versions_page:
+                if post_version.id <= last_post_version:
+                    finish_loop = True
+                    break
+                post_versions.append(post_version)
+            if finish_loop or not last_post_version or not post_versions_page:
                 break
         for post_version in post_versions[::-1]:
             if post_version.id > last_post_version: