diff --git a/tools/ci_build/github/windows/python/requirements.txt b/tools/ci_build/github/windows/python/requirements.txt
index 83593ff47e453..2dfba37c6f381 100644
--- a/tools/ci_build/github/windows/python/requirements.txt
+++ b/tools/ci_build/github/windows/python/requirements.txt
@@ -14,4 +14,4 @@ jinja2
 markupsafe
 semver
 packaging
-onnx==1.20.1
+onnx==1.21.0