diff --git a/package.json b/package.json
index 5e41f23..a6e7135 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "fs-extra": "^11.0.0",
     "jpeg-js": "^0.4.3",
     "mime": "^3.0.0",
-    "pngjs": "^6.0.0",
+    "pngjs": "^7.0.0",
     "yargs": "^17.2.1"
   },
   "devDependencies": {
@@ -48,7 +48,7 @@
     "jsdoc": "^4.0.0",
     "nyc": "^15.1.0",
     "open": "^8.3.0",
-    "prettier": "2.8.4",
+    "prettier": "2.8.8",
     "pretty-quick": "^3.1.1"
   },
   "scripts": {