diff --git a/README.md b/README.md
index 3b29576..3f737d6 100644
--- a/README.md
+++ b/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**
 
diff --git a/mini-lsm-book/src/00-preface.md b/mini-lsm-book/src/00-preface.md
index 6c8fb1c..3d6854a 100644
--- a/mini-lsm-book/src/00-preface.md
+++ b/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
 
diff --git a/mini-lsm-book/src/discord-badge.svg b/mini-lsm-book/src/discord-badge.svg
new file mode 100644
index 0000000..8cf96ef
--- /dev/null
+++ b/mini-lsm-book/src/discord-badge.svg
@@ -0,0 +1 @@
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