diff --git a/package.json b/package.json
index 02408ad..21c9b27 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,6 @@
   "devDependencies": {
     "@compodoc/compodoc": "^1.1.9",
     "@types/cors": "^2.8.6",
-    "@types/execa": "^0.9.0",
     "@types/express": "^4.16.1",
     "@types/extend": "^3.0.1",
     "@types/mocha": "^9.0.0",
diff --git a/system-test/fixtures/sample/package.json b/system-test/fixtures/sample/package.json
index 1a0b16c..df5fad3 100644
--- a/system-test/fixtures/sample/package.json
+++ b/system-test/fixtures/sample/package.json
@@ -18,10 +18,10 @@
   "devDependencies": {
     "@types/node": "^18.0.0",
     "browserify": "^17.0.0",
-    "gts": "^3.0.0",
+    "gts": "^3.1.0",
     "null-loader": "^4.0.0",
     "ts-loader": "^8.0.0",
-    "typescript": "^3.0.0",
+    "typescript": "^4.6.3",
     "webpack": "^5.35.0",
     "webpack-cli": "^4.0.0"
   }