diff --git a/package-lock.json b/package-lock.json
index c8291ffcb..7e938d5d9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4929,22 +4929,29 @@
       }
     },
     "jest-worker": {
-      "version": "24.9.0",
-      "resolved": "https://registry.npmjs.org/jest-worker/-/jest-worker-24.9.0.tgz",
-      "integrity": "sha512-51PE4haMSXcHohnSMdM42anbvZANYTqMrr52tVKPqqsPJMzoP6FYYDVqahX/HrAoKEKz3uUPzSvKs9A3qR4iVw==",
+      "version": "26.3.0",
+      "resolved": "https://registry.npmjs.org/jest-worker/-/jest-worker-26.3.0.tgz",
+      "integrity": "sha512-Vmpn2F6IASefL+DVBhPzI2J9/GJUsqzomdeN+P+dK8/jKxbh8R3BtFnx3FIta7wYlPU62cpJMJQo4kuOowcMnw==",
       "dev": true,
       "requires": {
+        "@types/node": "*",
         "merge-stream": "^2.0.0",
-        "supports-color": "^6.1.0"
+        "supports-color": "^7.0.0"
       },
       "dependencies": {
+        "has-flag": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
+          "integrity": "sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==",
+          "dev": true
+        },
         "supports-color": {
-          "version": "6.1.0",
-          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-6.1.0.tgz",
-          "integrity": "sha512-qe1jfm1Mg7Nq/NSh6XE24gPXROEVsWHxC1LIx//XNlD9iw7YZQGjZNjYN7xGaEG6iKdA8EtNFW6R0gjnVXp+wQ==",
+          "version": "7.2.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
+          "integrity": "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==",
           "dev": true,
           "requires": {
-            "has-flag": "^3.0.0"
+            "has-flag": "^4.0.0"
           }
         }
       }
@@ -6439,16 +6446,15 @@
       }
     },
     "rollup-plugin-terser": {
-      "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==",
+      "version": "7.0.2",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-terser/-/rollup-plugin-terser-7.0.2.tgz",
+      "integrity": "sha512-w3iIaU4OxcF52UUXiZNsNeuXIMDvFrr+ZXK6bFZ0Q60qyVfq4uLptoS4bbq3paG3x216eQllFZX7zt6TIImguQ==",
       "dev": true,
       "requires": {
-        "@babel/code-frame": "^7.5.5",
-        "jest-worker": "^24.9.0",
-        "rollup-pluginutils": "^2.8.2",
+        "@babel/code-frame": "^7.10.4",
+        "jest-worker": "^26.2.1",
         "serialize-javascript": "^4.0.0",
-        "terser": "^4.6.2"
+        "terser": "^5.0.0"
       }
     },
     "rollup-pluginutils": {
@@ -7185,9 +7191,9 @@
       }
     },
     "terser": {
-      "version": "4.8.0",
-      "resolved": "https://registry.npmjs.org/terser/-/terser-4.8.0.tgz",
-      "integrity": "sha512-EAPipTNeWsb/3wLPeup1tVPaXfIaU68xMnVdPafIL1TV05OhASArYyIfFvnvJCNrR2NIOvDVNNTFRa+Re2MWyw==",
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/terser/-/terser-5.3.0.tgz",
+      "integrity": "sha512-XTT3D3AwxC54KywJijmY2mxZ8nJiEjBHVYzq8l9OaYuRFWeQNBwvipuzzYEP4e+/AVcd1hqG/CqgsdIRyT45Fg==",
       "dev": true,
       "requires": {
         "commander": "^2.20.0",
diff --git a/package.json b/package.json
index 5277d6216..585b207a7 100644
--- a/package.json
+++ b/package.json
@@ -62,7 +62,7 @@
     "rollup": "2.26.10",
     "rollup-plugin-istanbul": "git+https://github.com/billowz/rollup-plugin-istanbul.git#rc",
     "rollup-plugin-svelte": "5.2.3",
-    "rollup-plugin-terser": "5.3.1",
+    "rollup-plugin-terser": "7.0.2",
     "rxjs": "6.6.2",
     "sapper": "0.28.1",
     "source-map-support": "0.5.19",