diff --git a/package-lock.json b/package-lock.json
index 801d17d36..ddfcdf95d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -489,11 +489,6 @@
       "integrity": "sha512-z/WhQ5FPySLdvREByI2vZiTWwCnF0moMJ1hK9YQwDTHKh6I7/uSckMetoRGb5UBZPC1z0jlw+n/XCgjeH7y1AQ==",
       "dev": true
     },
-    "async-limiter": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.1.tgz",
-      "integrity": "sha512-csOlWGAcRFJaI6m+F2WKdnMKr4HhdhFVBk0H/QbJFMCr+uO2kwohwXQPxw/9OCxp05r5ghVBFSyioixx3gfkNQ=="
-    },
     "asynckit": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
@@ -2046,8 +2041,7 @@
             "ansi-regex": {
               "version": "2.1.1",
               "bundled": true,
-              "dev": true,
-              "optional": true
+              "dev": true
             },
             "aproba": {
               "version": "1.2.0",
@@ -2068,14 +2062,12 @@
             "balanced-match": {
               "version": "1.0.0",
               "bundled": true,
-              "dev": true,
-              "optional": true
+              "dev": true
             },
             "brace-expansion": {
               "version": "1.1.11",
               "bundled": true,
               "dev": true,
-              "optional": true,
               "requires": {
                 "balanced-match": "^1.0.0",
                 "concat-map": "0.0.1"
@@ -2090,20 +2082,17 @@
             "code-point-at": {
               "version": "1.1.0",
               "bundled": true,
-              "dev": true,
-              "optional": true
+              "dev": true
             },
             "concat-map": {
               "version": "0.0.1",
               "bundled": true,
-              "dev": true,
-              "optional": true
+              "dev": true
             },
             "console-control-strings": {
               "version": "1.1.0",
               "bundled": true,
-              "dev": true,
-              "optional": true
+              "dev": true
             },
             "core-util-is": {
               "version": "1.0.2",
@@ -2220,8 +2209,7 @@
             "inherits": {
               "version": "2.0.4",
               "bundled": true,
-              "dev": true,
-              "optional": true
+              "dev": true
             },
             "ini": {
               "version": "1.3.5",
@@ -2233,7 +2221,6 @@
               "version": "1.0.0",
               "bundled": true,
               "dev": true,
-              "optional": true,
               "requires": {
                 "number-is-nan": "^1.0.0"
               }
@@ -2248,7 +2235,6 @@
               "version": "3.0.4",
               "bundled": true,
               "dev": true,
-              "optional": true,
               "requires": {
                 "brace-expansion": "^1.1.7"
               }
@@ -2256,14 +2242,12 @@
             "minimist": {
               "version": "1.2.5",
               "bundled": true,
-              "dev": true,
-              "optional": true
+              "dev": true
             },
             "minipass": {
               "version": "2.9.0",
               "bundled": true,
               "dev": true,
-              "optional": true,
               "requires": {
                 "safe-buffer": "^5.1.2",
                 "yallist": "^3.0.0"
@@ -2282,7 +2266,6 @@
               "version": "0.5.3",
               "bundled": true,
               "dev": true,
-              "optional": true,
               "requires": {
                 "minimist": "^1.2.5"
               }
@@ -2344,8 +2327,7 @@
             "npm-normalize-package-bin": {
               "version": "1.0.1",
               "bundled": true,
-              "dev": true,
-              "optional": true
+              "dev": true
             },
             "npm-packlist": {
               "version": "1.4.8",
@@ -2373,8 +2355,7 @@
             "number-is-nan": {
               "version": "1.0.1",
               "bundled": true,
-              "dev": true,
-              "optional": true
+              "dev": true
             },
             "object-assign": {
               "version": "4.1.1",
@@ -2386,7 +2367,6 @@
               "version": "1.4.0",
               "bundled": true,
               "dev": true,
-              "optional": true,
               "requires": {
                 "wrappy": "1"
               }
@@ -2464,8 +2444,7 @@
             "safe-buffer": {
               "version": "5.1.2",
               "bundled": true,
-              "dev": true,
-              "optional": true
+              "dev": true
             },
             "safer-buffer": {
               "version": "2.1.2",
@@ -2501,7 +2480,6 @@
               "version": "1.0.2",
               "bundled": true,
               "dev": true,
-              "optional": true,
               "requires": {
                 "code-point-at": "^1.0.0",
                 "is-fullwidth-code-point": "^1.0.0",
@@ -2521,7 +2499,6 @@
               "version": "3.0.1",
               "bundled": true,
               "dev": true,
-              "optional": true,
               "requires": {
                 "ansi-regex": "^2.0.0"
               }
@@ -2565,14 +2542,12 @@
             "wrappy": {
               "version": "1.0.2",
               "bundled": true,
-              "dev": true,
-              "optional": true
+              "dev": true
             },
             "yallist": {
               "version": "3.1.1",
               "bundled": true,
-              "dev": true,
-              "optional": true
+              "dev": true
             }
           }
         },
@@ -10995,12 +10970,9 @@
       }
     },
     "ws": {
-      "version": "6.1.4",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-6.1.4.tgz",
-      "integrity": "sha512-eqZfL+NE/YQc1/ZynhojeV8q+H050oR8AZ2uIev7RU10svA9ZnJUddHcOUZTJLinZ9yEfdA2kSATS2qZK5fhJA==",
-      "requires": {
-        "async-limiter": "~1.0.0"
-      }
+      "version": "7.4.2",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.2.tgz",
+      "integrity": "sha512-T4tewALS3+qsrpGI/8dqNMLIVdq/g/85U98HPMa6F0m6xTbvhXU6RCQLqPH3+SlomNV/LdY6RXEbBpMH6EOJnA=="
     },
     "xml-escape": {
       "version": "1.0.0",
diff --git a/package.json b/package.json
index bf2745514..ddfe41237 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
     "indexof": "0.0.1",
     "parseqs": "0.0.6",
     "parseuri": "0.0.6",
-    "ws": "~6.1.0",
+    "ws": "~7.4.2",
     "xmlhttprequest-ssl": "~1.5.4",
     "yeast": "0.1.2"
   },