diff --git a/package-lock.json b/package-lock.json
index 37ed3dd..6172f27 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -23,7 +23,7 @@
         "rollup": "^2.3.4",
         "rollup-plugin-livereload": "^1.0.0",
         "rollup-plugin-svelte": "^6.1.1",
-        "rollup-plugin-terser": "^5.1.2",
+        "rollup-plugin-terser": "^5.3.1",
         "svelte": "^3.53.0"
       }
     },
@@ -985,6 +985,15 @@
         }
       ]
     },
+    "node_modules/randombytes": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/randombytes/-/randombytes-2.1.0.tgz",
+      "integrity": "sha512-vYl3iOX+4CKUWuxGi9Ukhie6fsqXqS9FE2Zaic4tNFD2N2QQaXOMFbuKK4QmDHC0JO6B1Zp41J0LpT0oR68amQ==",
+      "dev": true,
+      "dependencies": {
+        "safe-buffer": "^5.1.0"
+      }
+    },
     "node_modules/readdirp": {
       "version": "3.6.0",
       "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-3.6.0.tgz",
@@ -1074,15 +1083,15 @@
       }
     },
     "node_modules/rollup-plugin-terser": {
-      "version": "5.3.0",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-terser/-/rollup-plugin-terser-5.3.0.tgz",
-      "integrity": "sha512-XGMJihTIO3eIBsVGq7jiNYOdDMb3pVxuzY0uhOE/FM4x/u9nQgr3+McsjzqBn3QfHIpNSZmFnpoKAwHBEcsT7g==",
+      "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==",
       "dev": true,
       "dependencies": {
         "@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"
       },
       "peerDependencies": {
@@ -1137,6 +1146,26 @@
         "node": ">= 6"
       }
     },
+    "node_modules/safe-buffer": {
+      "version": "5.2.1",
+      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
+      "integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ]
+    },
     "node_modules/sander": {
       "version": "0.5.1",
       "resolved": "https://registry.npmjs.org/sander/-/sander-0.5.1.tgz",
@@ -1149,10 +1178,13 @@
       }
     },
     "node_modules/serialize-javascript": {
-      "version": "2.1.2",
-      "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,
+      "dependencies": {
+        "randombytes": "^2.1.0"
+      }
     },
     "node_modules/sirv": {
       "version": "0.4.6",
@@ -2354,6 +2386,15 @@
       "resolved": "https://registry.npmjs.org/queue-microtask/-/queue-microtask-1.2.3.tgz",
       "integrity": "sha512-NuaNSa6flKT5JaSYQzJok04JzTL1CA6aGhv5rfLW3PgqA+M2ChpZQnAC8h8i4ZFkBS8X5RqkDBHA7r4hej3K9A=="
     },
+    "randombytes": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/randombytes/-/randombytes-2.1.0.tgz",
+      "integrity": "sha512-vYl3iOX+4CKUWuxGi9Ukhie6fsqXqS9FE2Zaic4tNFD2N2QQaXOMFbuKK4QmDHC0JO6B1Zp41J0LpT0oR68amQ==",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "^5.1.0"
+      }
+    },
     "readdirp": {
       "version": "3.6.0",
       "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-3.6.0.tgz",
@@ -2420,15 +2461,15 @@
       }
     },
     "rollup-plugin-terser": {
-      "version": "5.3.0",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-terser/-/rollup-plugin-terser-5.3.0.tgz",
-      "integrity": "sha512-XGMJihTIO3eIBsVGq7jiNYOdDMb3pVxuzY0uhOE/FM4x/u9nQgr3+McsjzqBn3QfHIpNSZmFnpoKAwHBEcsT7g==",
+      "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==",
       "dev": true,
       "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"
       }
     },
@@ -2465,6 +2506,12 @@
         "mri": "^1.1.0"
       }
     },
+    "safe-buffer": {
+      "version": "5.2.1",
+      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
+      "integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==",
+      "dev": true
+    },
     "sander": {
       "version": "0.5.1",
       "resolved": "https://registry.npmjs.org/sander/-/sander-0.5.1.tgz",
@@ -2477,10 +2524,13 @@
       }
     },
     "serialize-javascript": {
-      "version": "2.1.2",
-      "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"
+      }
     },
     "sirv": {
       "version": "0.4.6",
diff --git a/package.json b/package.json
index 466625f..ac59700 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "rollup": "^2.3.4",
     "rollup-plugin-livereload": "^1.0.0",
     "rollup-plugin-svelte": "^6.1.1",
-    "rollup-plugin-terser": "^5.1.2",
+    "rollup-plugin-terser": "^5.3.1",
     "svelte": "^3.53.0"
   },
   "dependencies": {