diff --git a/package-lock.json b/package-lock.json
index 62e577e..8fd274f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3558,10 +3558,7 @@
         "is-fullwidth-code-point": {
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
-          "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
-          "requires": {
-            "number-is-nan": "^1.0.0"
-          }
+          "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs="
         },
         "minimist": {
           "version": "0.0.8",
@@ -3578,8 +3575,7 @@
           "resolved": "https://registry.npmjs.org/nopt/-/nopt-4.0.1.tgz",
           "integrity": "sha1-0NRoWv1UFRk8jHUFYC0NF81kR00=",
           "requires": {
-            "abbrev": "1",
-            "osenv": "^0.1.4"
+            "abbrev": "1"
           }
         },
         "rimraf": {
@@ -6583,9 +6579,9 @@
       }
     },
     "terser": {
-      "version": "4.3.9",
-      "resolved": "https://registry.npmjs.org/terser/-/terser-4.3.9.tgz",
-      "integrity": "sha512-NFGMpHjlzmyOtPL+fDw3G7+6Ueh/sz4mkaUYa4lJCxOPTNzd0Uj0aZJOmsDYoSQyfuVoWDMSWTPU3huyOm2zdA==",
+      "version": "4.8.1",
+      "resolved": "https://registry.npmjs.org/terser/-/terser-4.8.1.tgz",
+      "integrity": "sha512-4GnLC0x667eJG0ewJTa6z/yXrbLGv80D9Ru6HIpCQmO+Q4PfEtBFi0ObSckqwL6VyQv/7ENJieXHo2ANmdQwgw==",
       "dev": true,
       "requires": {
         "commander": "^2.20.0",