diff --git a/.github/workflows/deploy.yaml b/.github/workflows/deploy.yaml
index a0d219e24..504b3dfee 100644
--- a/.github/workflows/deploy.yaml
+++ b/.github/workflows/deploy.yaml
@@ -36,4 +36,4 @@ jobs:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./public
           publish_branch: master  # deploying branch
-          cname: quartz.jzhao.xyz
+          cname: three.quartz.jzhao.xyz
diff --git a/README.md b/README.md
index 058b8ba7b..48526674f 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,8 @@
-# Quartz
+# Quartz 3
+
+> [!warning]
+> Quartz v3 is now deprecated and will no longer be maintained.
+> See how to migrate to [Quartz 4](https://quartz.jzhao.xyz) 
 
 Host your second brain and [digital garden](https://jzhao.xyz/posts/networked-thought) for free. Quartz features
 
@@ -12,7 +16,7 @@ Check out some of the [amazing gardens that community members](https://quartz.jz
 
 > “[One] who works with the door open gets all kinds of interruptions, but [they] also occasionally gets clues as to what the world is and what might be important.” — Richard Hamming
 
-🔗 Get Started: https://quartz.jzhao.xyz/
+🔗 Get Started: https://three.quartz.jzhao.xyz/
 
 ![Quartz Example Screenshot](./screenshot.png)*Quartz Example Screenshot*
 
diff --git a/config.toml b/config.toml
index dbe989329..c01336bdf 100644
--- a/config.toml
+++ b/config.toml
@@ -1,4 +1,4 @@
-baseURL = "https://quartz.jzhao.xyz/"
+baseURL = "https://three.quartz.jzhao.xyz/"
 languageCode = "en-us"
 relativeURLs = false
 disablePathToLower = true