diff --git a/backend/python/vllm/requirements-cublas13-after.txt b/backend/python/vllm/requirements-cublas13-after.txt
index 7050ea2eb..4db076ee9 100644
--- a/backend/python/vllm/requirements-cublas13-after.txt
+++ b/backend/python/vllm/requirements-cublas13-after.txt
@@ -3,5 +3,5 @@
 # on a cu130 host. Pull the cu130-flavoured wheel from vLLM's per-tag index
 # instead — the cublas13 case in install.sh adds --index-strategy=unsafe-best-match
 # so uv consults this index alongside PyPI.
---extra-index-url https://wheels.vllm.ai/0.20.2/cu130
-vllm==0.20.2
+--extra-index-url https://wheels.vllm.ai/0.21.0/cu130
+vllm==0.21.0