diff --git a/experiments/guess-static-sites/package-lock.json b/experiments/guess-static-sites/package-lock.json
index ce73edca..9baf8f09 100644
--- a/experiments/guess-static-sites/package-lock.json
+++ b/experiments/guess-static-sites/package-lock.json
@@ -2029,9 +2029,9 @@
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-          "version": "4.2.0",
-          "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.0.tgz",
-          "integrity": "sha512-zUz5JD+tgqtuDjMhwIg5uFVV3dtqZ9yQJlZVfq4I01/K5Paj5UHj7VyrQOJvzawSVlKpObApbfD0Ed6yJc+1eg==",
+          "version": "4.2.2",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.2.tgz",
+          "integrity": "sha512-XBJbT3N4JhVumXE0eoLU9DCjcaF92KLNqTmFCnG1pf8duUxFGwtP6AD6nkjw9a3IdiRtL3E2w3JDiE/xi3vOeA==",
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@@ -5148,9 +5148,9 @@
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     },
     "mocha": {
-      "version": "8.3.0",
-      "resolved": "https://registry.npmjs.org/mocha/-/mocha-8.3.0.tgz",
-      "integrity": "sha512-TQqyC89V1J/Vxx0DhJIXlq9gbbL9XFNdeLQ1+JsnZsVaSOV1z3tWfw0qZmQJGQRIfkvZcs7snQnZnOCKoldq1Q==",
+      "version": "8.3.1",
+      "resolved": "https://registry.npmjs.org/mocha/-/mocha-8.3.1.tgz",
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       "dev": true,
       "requires": {
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@@ -7989,9 +7989,9 @@
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-          "version": "4.2.0",
-          "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.0.tgz",
-          "integrity": "sha512-zUz5JD+tgqtuDjMhwIg5uFVV3dtqZ9yQJlZVfq4I01/K5Paj5UHj7VyrQOJvzawSVlKpObApbfD0Ed6yJc+1eg==",
+          "version": "4.2.2",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.2.tgz",
+          "integrity": "sha512-XBJbT3N4JhVumXE0eoLU9DCjcaF92KLNqTmFCnG1pf8duUxFGwtP6AD6nkjw9a3IdiRtL3E2w3JDiE/xi3vOeA==",
           "dev": true,
           "requires": {
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@@ -8082,9 +8082,9 @@
           "dev": true
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-          "version": "4.2.0",
-          "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.0.tgz",
-          "integrity": "sha512-zUz5JD+tgqtuDjMhwIg5uFVV3dtqZ9yQJlZVfq4I01/K5Paj5UHj7VyrQOJvzawSVlKpObApbfD0Ed6yJc+1eg==",
+          "version": "4.2.2",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.2.tgz",
+          "integrity": "sha512-XBJbT3N4JhVumXE0eoLU9DCjcaF92KLNqTmFCnG1pf8duUxFGwtP6AD6nkjw9a3IdiRtL3E2w3JDiE/xi3vOeA==",
           "dev": true,
           "requires": {
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@@ -8102,9 +8102,9 @@
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         "yargs-parser": {
-          "version": "20.2.4",
-          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-20.2.4.tgz",
-          "integrity": "sha512-WOkpgNhPTlE73h4VFAFsOnomJVaovO8VqLDzy5saChRBFQFBoMYirowyW+Q9HB4HFF4Z7VZTiG3iSzJJA29yRA==",
+          "version": "20.2.6",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-20.2.6.tgz",
+          "integrity": "sha512-AP1+fQIWSM/sMiET8fyayjx/J+JmTPt2Mr0FkrgqB4todtfa53sOsrSAcIrJRD5XS20bKUwaDIuMkWKCEiQLKA==",
           "dev": true
         }
       }
diff --git a/experiments/guess-static-sites/package.json b/experiments/guess-static-sites/package.json
index 09da875f..5467fbbe 100644
--- a/experiments/guess-static-sites/package.json
+++ b/experiments/guess-static-sites/package.json
@@ -27,7 +27,7 @@
     "chai": "4.3.0",
     "cors": "2.8.5",
     "http-server": "0.12.1",
-    "mocha": "8.3.0",
+    "mocha": "8.3.1",
     "path": "0.12.7",
     "puppeteer": "7.1.0",
     "standard": "16.0.3",