diff --git a/mkdocs.yaml b/mkdocs.yaml
index b392fb160c2a6..8f731a2c1fc8c 100644
--- a/mkdocs.yaml
+++ b/mkdocs.yaml
@@ -1,5 +1,5 @@
 site_name: vLLM
-site_url: https://docs.vllm.ai
+site_url: !ENV READTHEDOCS_CANONICAL_URL
 repo_url: https://github.com/vllm-project/vllm
 edit_uri: edit/main/docs/
 exclude_docs: |