diff --git a/package-lock.json b/package-lock.json
index 90416ef8..d297f0f5 100644
--- a/package-lock.json
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+      "integrity": "sha512-b3e+d5JbHAe/JSjwsC3Zn55wsBIM7AsHLjKxT31kGCldgbpFePaFo+PiddtO6uwRZWRw7sPXmAN8dTW61xmnSg==",
       "dev": true,
       "requires": {
         "commander": "^2.20.0",
-        "source-map": "~0.6.1",
-        "source-map-support": "~0.5.12"
+        "source-map": "~0.7.2",
+        "source-map-support": "~0.5.19"
       },
       "dependencies": {
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@@ -4732,9 +4817,9 @@
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-          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
-          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "version": "0.7.3",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.7.3.tgz",
+          "integrity": "sha512-CkCj6giN3S+n9qrYiBTX5gystlENnRW5jZeNLHpe6aue+SrHcG5VYwujhW9s4dY31mEGsxBDrHR6oI69fTXsaQ==",
           "dev": true
         }
       }
@@ -4951,9 +5036,9 @@
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     },
     "ua-parser-js": {
-      "version": "0.7.23",
-      "resolved": "https://registry.npmjs.org/ua-parser-js/-/ua-parser-js-0.7.23.tgz",
-      "integrity": "sha512-m4hvMLxgGHXG3O3fQVAyyAQpZzDOvwnhOTjYz5Xmr7r/+LpkNy3vJXdVRWgd1TkAb7NGROZuSy96CrlNVjA7KA==",
+      "version": "0.7.28",
+      "resolved": "https://registry.npmjs.org/ua-parser-js/-/ua-parser-js-0.7.28.tgz",
+      "integrity": "sha512-6Gurc1n//gjp9eQNXjD9O3M/sMwVtN5S8Lv9bvOYBfKfDNiIIhqiyi01vMBO45u4zkDE420w/e0se7Vs+sIg+g==",
       "dev": true
     },
     "uc.micro": {
@@ -5115,9 +5200,9 @@
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     "ws": {
-      "version": "7.4.3",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.3.tgz",
-      "integrity": "sha512-hr6vCR76GsossIRsr8OLR9acVVm1jyfEWvhbNjtgPOrfvAlKzvyeg/P6r8RuDjRyrcQoPQT7K0DGEPc7Ae6jzA==",
+      "version": "7.4.6",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.6.tgz",
+      "integrity": "sha512-YmhHDO4MzaDLB+M9ym/mDA5z0naX8j7SIlT8f8z+I0VtzsRbekxEutHSme7NPS2qE8StCYQNUnfWdXta/Yu85A==",
       "dev": true
     },
     "xmlcreate": {
@@ -5127,9 +5212,9 @@
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     "y18n": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
-      "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==",
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.3.tgz",
+      "integrity": "sha512-JKhqTOwSrqNA1NY5lSztJ1GrBiUodLMmIZuLiDaMRJ+itFd+ABVE8XBjOvIWL+rSqNDC74LCSFmlb/U4UZ4hJQ==",
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     "yallist": {
diff --git a/package.json b/package.json
index 76ffd498..87d0c0f5 100644
--- a/package.json
+++ b/package.json
@@ -82,7 +82,7 @@
     "mocha": "^5.0.0",
     "nyc": "^14.1.1",
     "rollup": "^2.38.5",
-    "rollup-plugin-terser": "^5.3.0",
+    "rollup-plugin-terser": "^7.0.2",
     "sinon": "^4.3.0",
     "typescript": "^4.1.2"
   },