diff --git a/lib/global.js b/lib/global.js
index 6a28b916019..18bfd73cc92 100644
--- a/lib/global.js
+++ b/lib/global.js
@@ -1,6 +1,8 @@
 'use strict'
 
-const globalDispatcher = Symbol.for('undici.globalDispatcher')
+// We include a version number for the Dispatcher API. In case of breaking changes,
+// this version number must be increased to avoid conflicts.
+const globalDispatcher = Symbol.for('undici.globalDispatcher.1')
 const { InvalidArgumentError } = require('./core/errors')
 const Agent = require('./agent')