diff --git a/scripts/src/platform-infra-sub2api-codex-sentinel.ts b/scripts/src/platform-infra-sub2api-codex-sentinel.ts
index 6a2b7243..18cf65b2 100644
--- a/scripts/src/platform-infra-sub2api-codex-sentinel.ts
+++ b/scripts/src/platform-infra-sub2api-codex-sentinel.ts
@@ -441,7 +441,7 @@ ${proxyEnv}
 export function sentinelContainerShellCommand(config: CodexPoolSentinelConfig): string {
   return [
     "set -eu",
-    `OPENAI_PYTHON_VERSION=${JSON.stringify(config.sdk.openaiPythonVersion)}`,
+    `export OPENAI_PYTHON_VERSION=${JSON.stringify(config.sdk.openaiPythonVersion)}`,
     "if ! python3 - <<'PY'",
     "import importlib.metadata",
     "import os",