diff --git a/gulpfile.js b/gulpfile.js
index c28f242..3f2be83 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -11,7 +11,7 @@ var glsl = require('gulp-glsl');
 
 var rollup = require('rollup');
 var { string } = require('rollup-plugin-string');
-var { terser } = require('rollup-plugin-terser');
+var terser = require('@rollup/plugin-terser');
 
 var browserSync = require('browser-sync').create();
 
diff --git a/package.json b/package.json
index 63c2ccf..122e69d 100644
--- a/package.json
+++ b/package.json
@@ -17,25 +17,25 @@
     "cesium": "1.77"
   },
   "devDependencies": {
-    "browser-sync": "^2.18.8",
-    "del": "^2.2.2",
-    "electron": "1.6.5",
+    "@rollup/plugin-terser": "^0.2.1",
+    "browser-sync": "^2.27.11",
+    "del": "^6.1.1",
+    "electron": "22.0.0",
     "glsl-strip-comments": "^1.0.0",
     "gulp": "^4.0.2",
     "gulp-babel": "^8.0.0",
     "gulp-glsl": "^1.2.4",
     "gulp-xo": "^0.15.0",
-    "jasmine-core": "^2.5.2",
-    "karma": "^1.6.0",
-    "karma-chrome-launcher": "^2.0.0",
-    "karma-coverage": "^1.1.1",
-    "karma-electron-launcher": "^0.2.0",
-    "karma-jasmine": "^1.1.0",
+    "jasmine-core": "^4.5.0",
+    "karma": "^6.4.1",
+    "karma-chrome-launcher": "^3.1.1",
+    "karma-coverage": "^2.2.0",
+    "karma-electron-launcher": "^0.3.0",
+    "karma-jasmine": "^5.1.0",
     "karma-requirejs": "^1.1.0",
-    "rollup": "^2.36.1",
+    "rollup": "^3.8.1",
     "rollup-plugin-string": "^3.0.0",
-    "rollup-plugin-terser": "^7.0.2",
-    "through2": "^2.0.3"
+    "through2": "^4.0.2"
   },
   "scripts": {
     "build": "gulp build",