diff --git a/reveal.js/package-lock.json b/reveal.js/package-lock.json
index 4ecc5cd..913102c 100644
--- a/reveal.js/package-lock.json
+++ b/reveal.js/package-lock.json
@@ -227,9 +227,9 @@
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-      "resolved": "https://registry.npmjs.org/async/-/async-3.2.0.tgz",
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+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-3.2.4.tgz",
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       "dev": true
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@@ -2330,12 +2330,12 @@
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-          "resolved": "https://registry.npmjs.org/async/-/async-2.6.2.tgz",
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+          "version": "2.6.4",
+          "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+          "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
           "dev": true,
           "requires": {
-            "lodash": "^4.17.11"
+            "lodash": "^4.17.14"
           }
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       }
@@ -2502,12 +2502,12 @@
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-          "resolved": "https://registry.npmjs.org/async/-/async-2.6.2.tgz",
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+          "version": "2.6.4",
+          "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+          "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
           "dev": true,
           "requires": {
-            "lodash": "^4.17.11"
+            "lodash": "^4.17.14"
           }
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@@ -4124,12 +4124,12 @@
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-          "resolved": "https://registry.npmjs.org/async/-/async-2.6.2.tgz",
-          "integrity": "sha512-H1qVYh1MYhEEFLsP97cVKqCGo7KfCyTt6uEWqsTBr9SO84oK9Uwbyd/yCW+6rKJLHksBNUVWZDAjfS+Ccx0Bbg==",
+          "version": "2.6.4",
+          "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+          "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
           "dev": true,
           "requires": {
-            "lodash": "^4.17.11"
+            "lodash": "^4.17.14"
           }
         }
       }