diff --git a/package-lock.json b/package-lock.json
index a0855eb615..ca294f7dd1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10884,9 +10884,9 @@
       }
     },
     "pngjs": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/pngjs/-/pngjs-5.0.0.tgz",
-      "integrity": "sha512-40QW5YalBNfQo5yRYmiw7Yz6TKKVr3h6970B2YE+3fQpsWcrbj1PzJgxeJ19DRQjhMbKPIuMY8rFaXc8moolVw==",
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/pngjs/-/pngjs-6.0.0.tgz",
+      "integrity": "sha512-TRzzuFRRmEoSW/p1KVAmiOgPco2Irlah+bGFCeNfJXxxYGwSw7YwAOAcd7X28K/m5bjBWKsC29KyoMfHbypayg==",
       "dev": true
     },
     "portfinder": {
diff --git a/package.json b/package.json
index 1d0313144b..ea1070586c 100644
--- a/package.json
+++ b/package.json
@@ -87,7 +87,7 @@
     "marked": "1.2.2",
     "mocha": "8.2.0",
     "pixelmatch": "^5.1.0",
-    "pngjs": "^5.0.0",
+    "pngjs": "^6.0.0",
     "proj4": "2.6.2",
     "puppeteer": "5.4.0",
     "rollup": "^2.1.0",