diff --git a/package-lock.json b/package-lock.json
index 2ced5e40..6e5831f1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -89,7 +89,7 @@
         "node-sass": "^6.0.1",
         "prettier": "^2.3.2",
         "ts-loader": "^6.2.1",
-        "typescript": "^3.9.10",
+        "typescript": "^4.9.5",
         "web-ext": "^6.2.0",
         "webextension-polyfill-ts": "^0.12.0",
         "webpack-cli": "^3.3.11"
@@ -27614,9 +27614,9 @@
       }
     },
     "node_modules/typescript": {
-      "version": "3.9.10",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.10.tgz",
-      "integrity": "sha512-w6fIxVE/H1PkLKcCPsFqKE7Kv7QUwhU8qQY2MueZXWx5cPZdwFupLgKK3vntcK98BtNHZtAF4LA/yl2a7k8R6Q==",
+      "version": "4.9.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.9.5.tgz",
+      "integrity": "sha512-1FXk9E2Hm+QzZQ7z+McJiHL4NW1F2EzMu9Nq9i3zAaGqibafqYwCVU6WyWAuyQRRzOlxou8xZSyXLEN8oKj24g==",
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
@@ -51507,9 +51507,9 @@
       }
     },
     "typescript": {
-      "version": "3.9.10",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.10.tgz",
-      "integrity": "sha512-w6fIxVE/H1PkLKcCPsFqKE7Kv7QUwhU8qQY2MueZXWx5cPZdwFupLgKK3vntcK98BtNHZtAF4LA/yl2a7k8R6Q=="
+      "version": "4.9.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.9.5.tgz",
+      "integrity": "sha512-1FXk9E2Hm+QzZQ7z+McJiHL4NW1F2EzMu9Nq9i3zAaGqibafqYwCVU6WyWAuyQRRzOlxou8xZSyXLEN8oKj24g=="
     },
     "umd": {
       "version": "3.0.3",
diff --git a/package.json b/package.json
index 95c92a1f..142a006e 100644
--- a/package.json
+++ b/package.json
@@ -127,7 +127,7 @@
     "node-sass": "^6.0.1",
     "prettier": "^2.3.2",
     "ts-loader": "^6.2.1",
-    "typescript": "^3.9.10",
+    "typescript": "^4.9.5",
     "web-ext": "^6.2.0",
     "webextension-polyfill-ts": "^0.12.0",
     "webpack-cli": "^3.3.11"