diff --git a/package.json b/package.json
index 49efea0d18..21d50f67c2 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,9 @@
     "debug": "^4.1.0",
     "extract-zip": "^1.6.6",
     "https-proxy-agent": "^3.0.0",
+    "jpeg-js": "^0.3.6",
     "mime": "^2.0.3",
+    "pngjs": "^3.4.0",
     "proxy-from-env": "^1.0.0",
     "rimraf": "^2.6.1",
     "ws": "^6.1.0"
@@ -46,8 +48,10 @@
   "devDependencies": {
     "@types/debug": "0.0.31",
     "@types/extract-zip": "^1.6.2",
+    "@types/jpeg-js": "^0.3.7",
     "@types/mime": "^2.0.0",
     "@types/node": "^8.10.34",
+    "@types/pngjs": "^3.4.0",
     "@types/rimraf": "^2.0.2",
     "@types/ws": "^6.0.1",
     "@typescript-eslint/eslint-plugin": "^2.6.1",
@@ -56,12 +60,10 @@
     "cross-env": "^5.0.5",
     "eslint": "^6.6.0",
     "esprima": "^4.0.0",
-    "jpeg-js": "^0.3.4",
     "minimist": "^1.2.0",
     "ncp": "^2.0.0",
     "node-stream-zip": "^1.8.2",
     "pixelmatch": "^4.0.2",
-    "pngjs": "^3.3.3",
     "progress": "^2.0.1",
     "text-diff": "^1.0.1",
     "ts-loader": "^6.1.2",