diff --git a/src/server/index.ts b/src/server/index.ts
index 2a6e713..75011a5 100644
--- a/src/server/index.ts
+++ b/src/server/index.ts
@@ -2,6 +2,10 @@ import { server } from './server'
 
 process.env.NODE_TLS_REJECT_UNAUTHORIZED = '0'
 
+const [major] = process.versions.node.split('.').map(Number)
+
+if (major < 21) throw new Error('Node version must be >= 21.0.0')
+
 export const SERVER_PORT = process.env.PORT || 8080
 
 server.listen(SERVER_PORT, () => {