diff --git a/src/php/composer.json b/src/php/composer.json
index 2ad73223c65bdbb3360eb95bd20e7e81b72d0fa3..b95cde1234ba96185538b6ee4e6c8668255ef77b 100644
--- a/src/php/composer.json
+++ b/src/php/composer.json
@@ -5,6 +5,7 @@
   "keywords": ["rpc"],
   "homepage": "http://grpc.io",
   "license": "BSD-3-Clause",
+  "version": "1.0.0",
   "repositories": [
     {
       "type": "vcs",