diff --git a/package.json b/package.json
index 609df54..99e1aba 100644
--- a/package.json
+++ b/package.json
@@ -17,38 +17,38 @@
   },
   "homepage": "https://github.com/mozilla/webextension-polyfill",
   "devDependencies": {
-    "@babel/core": "^7.0.0",
-    "@babel/preset-env": "^7.0.0",
-    "@babel/register": "^7.0.0",
-    "async-wait-until": "^1.1.5",
-    "babel-eslint": "^10.0.3",
-    "babel-preset-minify": "^0.5.1",
-    "browserify": "^16.2.2",
-    "chai": "^4.2.0",
-    "chromedriver": "^87.0.2",
-    "codecov": "^3.8.1",
-    "cross-env": "^6.0.3",
-    "eslint": "^6.6.0",
-    "finalhandler": "^1.1.0",
-    "geckodriver": "^1.11.2",
-    "global-replaceify": "^1.0.0",
-    "grunt": "^1.0.1",
-    "grunt-babel": "^8.0.0",
-    "grunt-contrib-concat": "^1.0.1",
-    "grunt-replace": "^1.0.1",
-    "gruntify-eslint": "^5.0.0",
-    "istanbul-lib-instrument": "^3.3.0",
-    "jsdom": "^9.6.0",
-    "mocha": "^6.2.2",
-    "nyc": "^14.1.1",
-    "selenium-webdriver": "^4.0.0-alpha.1",
-    "serve-static": "^1.13.1",
-    "shelljs": "^0.8.2",
-    "sinon": "^7.5.0",
-    "tap-nirvana": "^1.0.8",
-    "tape": "^4.9.1",
-    "tape-async": "^2.3.0",
-    "tmp": "^0.1.0"
+    "@babel/core": "7.12.13",
+    "@babel/preset-env": "7.12.13",
+    "@babel/register": "7.12.13",
+    "async-wait-until": "1.2.6",
+    "babel-eslint": "10.1.0",
+    "babel-preset-minify": "0.5.1",
+    "browserify": "16.5.2",
+    "chai": "4.2.0",
+    "chromedriver": "87.0.7",
+    "codecov": "3.8.1",
+    "cross-env": "6.0.3",
+    "eslint": "6.8.0",
+    "finalhandler": "1.1.2",
+    "geckodriver": "1.22.1",
+    "global-replaceify": "1.0.0",
+    "grunt": "1.3.0",
+    "grunt-babel": "8.0.0",
+    "grunt-contrib-concat": "1.0.1",
+    "grunt-replace": "1.0.1",
+    "gruntify-eslint": "5.0.0",
+    "istanbul-lib-instrument": "3.3.0",
+    "jsdom": "9.12.0",
+    "mocha": "6.2.3",
+    "nyc": "14.1.1",
+    "selenium-webdriver": "4.0.0-alpha.8",
+    "serve-static": "1.14.1",
+    "shelljs": "0.8.4",
+    "sinon": "7.5.0",
+    "tap-nirvana": "1.1.0",
+    "tape": "4.13.3",
+    "tape-async": "2.3.0",
+    "tmp": "0.1.0"
   },
   "nyc": {
     "reporter": [