diff --git a/scripts/download-conformance-release.js b/scripts/download-conformance-release.js
index 58f49307..36eb2a17 100644
--- a/scripts/download-conformance-release.js
+++ b/scripts/download-conformance-release.js
@@ -18,7 +18,7 @@ import { writeFileSync, mkdirSync } from "node:fs";
 import { unzipSync } from "fflate";
 
 // Version of the conformance test runner / upstream google-protobuf release
-const version = "27.4"; // 28.0
+const version = "28.0";
 const protoDirectory = new URL("../proto", import.meta.url).pathname;
 const runnerDirectory = new URL("../node_modules/.bin", import.meta.url)
   .pathname;