diff --git a/webXRapp/ProgressivelyEnhancedIndoorNavigationWebXR/package-lock.json b/webXRapp/ProgressivelyEnhancedIndoorNavigationWebXR/package-lock.json
index 84bda3a..a15ae83 100644
--- a/webXRapp/ProgressivelyEnhancedIndoorNavigationWebXR/package-lock.json
+++ b/webXRapp/ProgressivelyEnhancedIndoorNavigationWebXR/package-lock.json
@@ -1133,9 +1133,9 @@
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-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.0.tgz",
-      "integrity": "sha512-gac8OEcQ2Li1dxIEWGZzsp2BitJxwkwcOm0zHAJLcPJaVvm58FRnk6RkuLRpU1EujipU2ZFODv2P9DLMfnV8mw==",
+      "version": "6.4.1",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.1.tgz",
+      "integrity": "sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==",
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diff --git a/webXRapp/ProgressivelyEnhancedIndoorNavigationWebXR/package.json b/webXRapp/ProgressivelyEnhancedIndoorNavigationWebXR/package.json
old mode 100755
new mode 100644
index 8511121..f0b766b
--- a/webXRapp/ProgressivelyEnhancedIndoorNavigationWebXR/package.json
+++ b/webXRapp/ProgressivelyEnhancedIndoorNavigationWebXR/package.json
@@ -28,7 +28,7 @@
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     "@babel/plugin-syntax-dynamic-import": "^7.0.0",
     "@babel/preset-env": "^7.1.0",
-    "acorn": "^6.1.1",
+    "acorn": "^6.4.1",
     "babel-loader": "^8.0.4",
     "browser-sync": "^2.26.3",
     "browser-sync-webpack-plugin": "2.2.2",