diff --git a/docs/tutorials/reading-list.md b/docs/tutorials/reading-list.md
index f6549ac1a9..0372448454 100644
--- a/docs/tutorials/reading-list.md
+++ b/docs/tutorials/reading-list.md
@@ -146,10 +146,6 @@ You may want to take a look first at our [Git and GitHub guide][].
 
 [Git and GitHub guide]: ../git/index.html
 
-*Article* - [Git tips][]
-
-[Git tips]: http://blog.sidhant.me/os/python/git/projects/2017/01/07/Zulip-and-git.html
-
 ## Computer Science/Algorithms
 
 *Blog* - [GeeksforGeeks][]
diff --git a/tools/documentation_crawler/documentation_crawler/spiders/common/spiders.py b/tools/documentation_crawler/documentation_crawler/spiders/common/spiders.py
index c8922c3a58..2d0394cfac 100644
--- a/tools/documentation_crawler/documentation_crawler/spiders/common/spiders.py
+++ b/tools/documentation_crawler/documentation_crawler/spiders/common/spiders.py
@@ -16,6 +16,8 @@ EXCLUDED_URLS = [
     'https://medium.freecodecamp.org/',
     # Returns 404 to HEAD requests unconditionally
     'https://www.git-tower.com/blog/command-line-cheat-sheet/',
+    # Requires authentication
+    'https://circleci.com/gh/zulip/zulip',
 ]