diff --git a/build/gulpfile.extensions.js b/build/gulpfile.extensions.js
index 7826f48..eca4a1d 100644
--- a/build/gulpfile.extensions.js
+++ b/build/gulpfile.extensions.js
@@ -23,2 +23,3 @@ const plumber = require('gulp-plumber');
 const ext = require('./lib/extensions');
+const product = require('../product.json');
 
@@ -74,3 +75,3 @@ const compilations = [
 
-const getBaseUrl = out => `https://main.vscode-cdn.net/sourcemaps/${commit}/${out}`;
+const getBaseUrl = out => `https://github.com/VSCodium/sourcemaps/releases/download/${product.quality}-${commit}/${out.replaceAll('/', '-')}`;
 
diff --git a/build/gulpfile.reh.js b/build/gulpfile.reh.js
index 10b7b44..79861bf 100644
--- a/build/gulpfile.reh.js
+++ b/build/gulpfile.reh.js
@@ -454,3 +454,3 @@ function tweakProductForServerWeb(product) {
 		util.rimraf(`out-vscode-${type}-min`),
-		optimize.minifyTask(`out-vscode-${type}`, `https://main.vscode-cdn.net/sourcemaps/${commit}/core`)
+		optimize.minifyTask(`out-vscode-${type}`, `https://github.com/VSCodium/sourcemaps/releases/download/${product.quality}-${commit}/core`)
 	));
diff --git a/build/gulpfile.vscode.js b/build/gulpfile.vscode.js
index ed06b6a..9488983 100644
--- a/build/gulpfile.vscode.js
+++ b/build/gulpfile.vscode.js
@@ -147,3 +147,3 @@ gulp.task(bundleVSCodeTask);
 
-const sourceMappingURLBase = `https://main.vscode-cdn.net/sourcemaps/${commit}`;
+const sourceMappingURLBase = `https://github.com/VSCodium/sourcemaps/releases/download/${product.quality}-${commit}`;
 const minifyVSCodeTask = task.define('minify-vscode', task.series(
diff --git a/build/gulpfile.vscode.web.js b/build/gulpfile.vscode.web.js
index 295a977..318ce92 100644
--- a/build/gulpfile.vscode.web.js
+++ b/build/gulpfile.vscode.web.js
@@ -140,3 +140,3 @@ const minifyVSCodeWebTask = task.define('minify-vscode-web', task.series(
 	util.rimraf('out-vscode-web-min'),
-	optimize.minifyTask('out-vscode-web', `https://main.vscode-cdn.net/sourcemaps/${commit}/core`)
+	optimize.minifyTask('out-vscode-web', `https://github.com/VSCodium/sourcemaps/releases/download/${product.quality}-${commit}/core`)
 ));
diff --git a/build/lib/extensions.js b/build/lib/extensions.js
index c80a1be..25cf259 100644
--- a/build/lib/extensions.js
+++ b/build/lib/extensions.js
@@ -75,4 +75,5 @@ const vzip = require('gulp-vinyl-zip');
 const root = path_1.default.dirname(path_1.default.dirname(__dirname));
+const product = JSON.parse(fs_1.default.readFileSync(path_1.default.join(root, 'product.json'), 'utf8'));
 const commit = (0, getVersion_1.getVersion)(root);
-const sourceMappingURLBase = `https://main.vscode-cdn.net/sourcemaps/${commit}`;
+const sourceMappingURLBase = `https://github.com/VSCodium/sourcemaps/releases/download/${product.quality}-${commit}`;
 function minifyExtensionResources(input) {
@@ -205,3 +206,3 @@ function fromLocalWebpack(extensionPath, webpackConfigFileName, disableMangle) {
                         data.contents = Buffer.from(contents.replace(/\n\/\/# sourceMappingURL=(.*)$/gm, function (_m, g1) {
-                            return `\n//# sourceMappingURL=${sourceMappingURLBase}/extensions/${path_1.default.basename(extensionPath)}/${relativeOutputPath}/${g1}`;
+                            return `\n//# sourceMappingURL=${sourceMappingURLBase}/extensions-${path_1.default.basename(extensionPath).replaceAll('/', '-')}-${relativeOutputPath.replaceAll('/', '-')}-${g1.replaceAll('/', '-')}`;
                         }), 'utf8');
diff --git a/build/lib/extensions.ts b/build/lib/extensions.ts
index 9e7cf9f..eed31ca 100644
--- a/build/lib/extensions.ts
+++ b/build/lib/extensions.ts
@@ -30,4 +30,5 @@ const vzip = require('gulp-vinyl-zip');
 const root = path.dirname(path.dirname(__dirname));
+const product = JSON.parse(fs.readFileSync(path.join(root, 'product.json'), 'utf8'));
 const commit = getVersion(root);
-const sourceMappingURLBase = `https://main.vscode-cdn.net/sourcemaps/${commit}`;
+const sourceMappingURLBase = `https://github.com/VSCodium/sourcemaps/releases/download/${product.quality}-${commit}`;
 
@@ -179,3 +180,3 @@ function fromLocalWebpack(extensionPath: string, webpackConfigFileName: string,
 							data.contents = Buffer.from(contents.replace(/\n\/\/# sourceMappingURL=(.*)$/gm, function (_m, g1) {
-								return `\n//# sourceMappingURL=${sourceMappingURLBase}/extensions/${path.basename(extensionPath)}/${relativeOutputPath}/${g1}`;
+								return `\n//# sourceMappingURL=${sourceMappingURLBase}/extensions-${path.basename(extensionPath).replaceAll('/', '-')}-${relativeOutputPath.replaceAll('/', '-')}-${g1.replaceAll('/', '-')}`;
 							}), 'utf8');
diff --git a/build/lib/optimize.js b/build/lib/optimize.js
index fbc455b..4e7fe85 100644
--- a/build/lib/optimize.js
+++ b/build/lib/optimize.js
@@ -186,3 +186,3 @@ function bundleTask(opts) {
 function minifyTask(src, sourceMapBaseUrl) {
-    const sourceMappingURL = sourceMapBaseUrl ? ((f) => `${sourceMapBaseUrl}/${f.relative}.map`) : undefined;
+    const sourceMappingURL = sourceMapBaseUrl ? ((f) => `${sourceMapBaseUrl}-${f.relative.replaceAll('/', '-')}.map`) : undefined;
     return cb => {
diff --git a/build/lib/optimize.ts b/build/lib/optimize.ts
index d89d0d6..fca30cf 100644
--- a/build/lib/optimize.ts
+++ b/build/lib/optimize.ts
@@ -211,3 +211,3 @@ export function bundleTask(opts: IBundleESMTaskOpts): () => NodeJS.ReadWriteStre
 export function minifyTask(src: string, sourceMapBaseUrl?: string): (cb: any) => void {
-	const sourceMappingURL = sourceMapBaseUrl ? ((f: any) => `${sourceMapBaseUrl}/${f.relative}.map`) : undefined;
+	const sourceMappingURL = sourceMapBaseUrl ? ((f: any) => `${sourceMapBaseUrl}-${f.relative.replaceAll('/', '-')}.map`) : undefined;
 
diff --git a/build/lib/util.js b/build/lib/util.js
index 389b9e0..f80d8e5 100644
--- a/build/lib/util.js
+++ b/build/lib/util.js
@@ -235,4 +235,4 @@ function rewriteSourceMappingURL(sourceMappingURLBase) {
         const contents = f.contents.toString('utf8');
-        const str = `//# sourceMappingURL=${sourceMappingURLBase}/${path_1.default.dirname(f.relative).replace(/\\/g, '/')}/$1`;
-        f.contents = Buffer.from(contents.replace(/\n\/\/# sourceMappingURL=(.*)$/gm, str));
+        const fp = path_1.default.dirname(f.relative).replace(/\\/g, '/').replaceAll('/', '-');
+        f.contents = Buffer.from(contents.replace(/\n\/\/# sourceMappingURL=(.*)$/gm, (_m, p) => `//# sourceMappingURL=${sourceMappingURLBase}/${fp}-${p.replaceAll('/', '-')}`));
         return f;
diff --git a/build/lib/util.ts b/build/lib/util.ts
index 4931342..833091c 100644
--- a/build/lib/util.ts
+++ b/build/lib/util.ts
@@ -285,4 +285,4 @@ export function rewriteSourceMappingURL(sourceMappingURLBase: string): NodeJS.Re
 			const contents = (<Buffer>f.contents).toString('utf8');
-			const str = `//# sourceMappingURL=${sourceMappingURLBase}/${path.dirname(f.relative).replace(/\\/g, '/')}/$1`;
-			f.contents = Buffer.from(contents.replace(/\n\/\/# sourceMappingURL=(.*)$/gm, str));
+			const fp = path.dirname(f.relative).replace(/\\/g, '/').replaceAll('/', '-');
+			f.contents = Buffer.from(contents.replace(/\n\/\/# sourceMappingURL=(.*)$/gm, (_m, p) => `//# sourceMappingURL=${sourceMappingURLBase}/${fp}-${p.replaceAll('/', '-')}`));
 			return f;