diff --git a/static/presentations/reveal.js/package-lock.json b/static/presentations/reveal.js/package-lock.json
old mode 100755
new mode 100644
index 0c4c14a..7678a5d
--- a/static/presentations/reveal.js/package-lock.json
+++ b/static/presentations/reveal.js/package-lock.json
@@ -4860,16 +4860,22 @@
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+      "version": "3.3.3",
+      "resolved": "https://registry.npmjs.org/socket.io-parser/-/socket.io-parser-3.3.3.tgz",
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       "dev": true,
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+        "component-emitter": "~1.3.0",
         "debug": "~3.1.0",
         "isarray": "2.0.1"
       },
       "dependencies": {
+        "component-emitter": {
+          "version": "1.3.0",
+          "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.3.0.tgz",
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+        },
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           "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
@@ -4882,13 +4888,13 @@
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           "resolved": "https://registry.npmjs.org/isarray/-/isarray-2.0.1.tgz",
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           "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
-          "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=",
+          "integrity": "sha512-Tpp60P6IUJDTuOq/5Z8cdskzJujfwqfOTkrwIwj7IRISpnkJnT6SyJ4PCPnGMoFjC9ddhal5KVIYtAt97ix05A==",
           "dev": true
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