diff --git a/composer.json b/composer.json
index 9e6466d61..1b79f2241 100644
--- a/composer.json
+++ b/composer.json
@@ -5,6 +5,7 @@
   "keywords": ["google", "oauth2", "authentication"],
   "homepage": "http://github.com/google/google-auth-library-php",
   "license": "Apache-2.0",
+  "version": "1.33.0",
   "support": {
     "docs": "https://googleapis.github.io/google-auth-library-php/main/"
   },