diff --git a/experiments/offline-fallback-page/package-lock.json b/experiments/offline-fallback-page/package-lock.json
index f1b3a08..89910b3 100644
--- a/experiments/offline-fallback-page/package-lock.json
+++ b/experiments/offline-fallback-page/package-lock.json
@@ -4232,15 +4232,15 @@
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-      "resolved": "https://registry.npmjs.org/rollup-plugin-terser/-/rollup-plugin-terser-5.3.0.tgz",
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+      "version": "5.3.1",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-terser/-/rollup-plugin-terser-5.3.1.tgz",
+      "integrity": "sha512-1pkwkervMJQGFYvM9nscrUoncPwiKR/K+bHdjv6PFgRo3cgPHoRT83y2Aa3GvINj4539S15t/tpFPb775TDs6w==",
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       "requires": {
         "@babel/code-frame": "^7.5.5",
         "jest-worker": "^24.9.0",
         "rollup-pluginutils": "^2.8.2",
-        "serialize-javascript": "^2.1.2",
+        "serialize-javascript": "^4.0.0",
         "terser": "^4.6.2"
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@@ -4485,10 +4485,13 @@
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-      "resolved": "https://registry.npmjs.org/serialize-javascript/-/serialize-javascript-2.1.2.tgz",
-      "integrity": "sha512-rs9OggEUF0V4jUSecXazOYsLfu7OGK2qIn3c7IPBiffz32XniEp/TX9Xmc9LQfK2nQ2QKHvZ2oygKUGU0lG4jQ==",
-      "dev": true
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/serialize-javascript/-/serialize-javascript-4.0.0.tgz",
+      "integrity": "sha512-GaNA54380uFefWghODBWEGisLZFj00nS5ACs6yHa9nLqlLpVLO8ChDGeKRjZnV4Nh4n0Qi7nhYZD/9fCPzEqkw==",
+      "dev": true,
+      "requires": {
+        "randombytes": "^2.1.0"
+      }
     },
     "serve": {
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@@ -4587,9 +4590,9 @@
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-      "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.19.tgz",
-      "integrity": "sha512-Wonm7zOCIJzBGQdB+thsPar0kYuCIzYvxZwlBa87yi/Mdjv7Tip2cyVbLj5o0cFPN4EVkuTwb3GDDyUx2DGnGw==",
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+      "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.21.tgz",
+      "integrity": "sha512-uBHU3L3czsIyYXKX88fdrGovxdSCoTGDRZ6SYXtSRxLZUzHg5P/66Ht6uoUlHu9EZod+inXhKo3qQgwXUT/y1w==",
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diff --git a/experiments/offline-fallback-page/package.json b/experiments/offline-fallback-page/package.json
index 1696be6..a97d926 100644
--- a/experiments/offline-fallback-page/package.json
+++ b/experiments/offline-fallback-page/package.json
@@ -15,7 +15,7 @@
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     "rollup": "2.9.1",
     "rollup-plugin-copy": "3.3.0",
-    "rollup-plugin-terser": "5.3.0",
+    "rollup-plugin-terser": "5.3.1",
     "rollup-plugin-workbox": "6.2.0",
     "workbox-cli": "6.5.4",
     "workbox-precaching": "5.1.2",