diff --git a/package-lock.json b/package-lock.json
index 7fa8cc2..1e6f884 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,7 +13,7 @@
             },
             "devDependencies": {
                 "@rcv-prod-toolkit/types": "github:rcv-prod-toolkit/types",
-                "typescript": "^4.3.2"
+                "typescript": "^4.9.4"
             }
         },
         "node_modules/@colors/colors": {
@@ -298,9 +298,9 @@
             "dev": true
         },
         "node_modules/typescript": {
-            "version": "4.8.4",
-            "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.8.4.tgz",
-            "integrity": "sha512-QCh+85mCy+h0IGff8r5XWzOVSbBO+KfeYrMQh7NJ58QujwcE22u+NUSmUxqF+un70P9GXKxa2HCNiTTMJknyjQ==",
+            "version": "4.9.4",
+            "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.9.4.tgz",
+            "integrity": "sha512-Uz+dTXYzxXXbsFpM86Wh3dKCxrQqUcVMxwU54orwlJjOpO3ao8L7j5lH+dWfTwgCwIuM9GQ2kvVotzYJMXTBZg==",
             "dev": true,
             "bin": {
                 "tsc": "bin/tsc",
@@ -589,9 +589,9 @@
             "dev": true
         },
         "typescript": {
-            "version": "4.8.4",
-            "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.8.4.tgz",
-            "integrity": "sha512-QCh+85mCy+h0IGff8r5XWzOVSbBO+KfeYrMQh7NJ58QujwcE22u+NUSmUxqF+un70P9GXKxa2HCNiTTMJknyjQ==",
+            "version": "4.9.4",
+            "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.9.4.tgz",
+            "integrity": "sha512-Uz+dTXYzxXXbsFpM86Wh3dKCxrQqUcVMxwU54orwlJjOpO3ao8L7j5lH+dWfTwgCwIuM9GQ2kvVotzYJMXTBZg==",
             "dev": true
         },
         "util-deprecate": {
diff --git a/package.json b/package.json
index d87af1d..5f47f10 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     },
     "devDependencies": {
         "@rcv-prod-toolkit/types": "github:rcv-prod-toolkit/types",
-        "typescript": "^4.3.2"
+        "typescript": "^4.9.4"
     },
     "scripts": {
         "build": "tsc"