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Signed-off-by: Alex Chi Z <iskyzh@gmail.com>

Author: skyzh

README.md

@@ -14,7 +14,7 @@ The Mini-LSM book is available at [https://skyzh.github.io/mini-lsm](https://sky
 
 You may join skyzh's Discord server and study with the mini-lsm community.
 
-[![Join skyzh's Discord Server](https://dcbadge.vercel.app/api/server/ZgXzxpua3H)](https://skyzh.dev/join/discord)
+[![Join skyzh's Discord Server](mini-lsm-book/src/discord-badge.svg)](https://skyzh.dev/join/discord)
 
 **Add Your Solution**
 

mini-lsm-book/src/00-preface.md

@@ -74,7 +74,7 @@ Yes! Everything publicly available now will be free forever and receive lifetime
 
 You may join skyzh's Discord server and study with the mini-lsm community.
 
-[![Join skyzh's Discord Server](https://dcbadge.vercel.app/api/server/ZgXzxpua3H)](https://skyzh.dev/join/discord)
+[![Join skyzh's Discord Server](discord-badge.svg)](https://skyzh.dev/join/discord)
 
 ## Get Started