diff --git a/.eslintrc.json b/.eslintrc.json
index 6c69dcbf3be5..03dab94dea3a 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -10,7 +10,7 @@
         {
             "files": [
                 "index.js",
-                "server.js",
+                "server.cjs",
                 "gulpfile.js",
                 "Source/Workers/transferTypedArrayTest.js"
             ],
diff --git a/.npmignore b/.npmignore
index 98c5270d4a0e..b6218280c65f 100644
--- a/.npmignore
+++ b/.npmignore
@@ -23,7 +23,7 @@
 /index.html
 /index.release.html
 /launches
-/server.js
+/server.cjs
 /Source/copyrightHeader.js
 /Specs
 /ThirdParty
diff --git a/.vscode/launch.json b/.vscode/launch.json
index 85fb445c2db3..98648ed40a0b 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -8,7 +8,7 @@
             "type": "node",
             "request": "launch",
             "name": "Launch Program",
-            "program": "${workspaceRoot}\\server.js",
+            "program": "${workspaceRoot}\\server.cjs",
             "cwd": "${workspaceRoot}"
         },
         {
@@ -18,4 +18,4 @@
             "port": 5858
         }
     ]
-}
\ No newline at end of file
+}
diff --git a/gulpfile.js b/gulpfile.js
index 257d29915a57..4bf30b5db619 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -342,7 +342,7 @@ gulp.task('makeZipFile', gulp.series('release', function() {
         'ThirdParty/**',
         'favicon.ico',
         'gulpfile.js',
-        'server.js',
+        'server.cjs',
         'package.json',
         'LICENSE.md',
         'CHANGES.md',
@@ -460,7 +460,7 @@ function deployCesium(bucketName, uploadDirectory, cacheControl, done) {
                 'gulpfile.js',
                 'index.html',
                 'package.json',
-                'server.js',
+                'server.cjs',
                 'web.config',
                 '*.zip',
                 '*.tgz'
diff --git a/package.json b/package.json
index cab2953f876d..6c5570bf08a6 100644
--- a/package.json
+++ b/package.json
@@ -43,7 +43,7 @@
     "eslint": "^6.4.0",
     "eslint-plugin-html": "^6.0.0",
     "express": "^4.15.0",
-    "globby": "^10.0.0",
+    "globby": "^11.0.0",
     "glsl-strip-comments": "^1.0.0",
     "gulp": "^4.0.0",
     "gulp-clean-css": "^4.2.0",
@@ -82,8 +82,8 @@
   },
   "scripts": {
     "convertToModules": "gulp convertToModules",
-    "start": "node server.js",
-    "startPublic": "node server.js --public",
+    "start": "node server.cjs",
+    "startPublic": "node server.cjs --public",
     "build": "gulp build",
     "build-watch": "gulp build-watch",
     "buildApps": "gulp buildApps",
diff --git a/server.js b/server.cjs
similarity index 98%
rename from server.js
rename to server.cjs
index ff99c406902b..59fa98628478 100644
--- a/server.js
+++ b/server.cjs
@@ -170,7 +170,7 @@
     server.on('error', function (e) {
         if (e.code === 'EADDRINUSE') {
             console.log('Error: Port %d is already in use, select a different port.', argv.port);
-            console.log('Example: node server.js --port %d', argv.port + 1);
+            console.log('Example: node server.cjs --port %d', argv.port + 1);
         } else if (e.code === 'EACCES') {
             console.log('Error: This process does not have permission to listen on port %d.', argv.port);
             if (argv.port < 1024) {