diff --git a/package-lock.json b/package-lock.json
index 321c0fc..3ecbb1c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -75,11 +75,6 @@
       "resolved": "https://registry.npmjs.org/async-each/-/async-each-1.0.1.tgz",
       "integrity": "sha1-GdOGodntxufByF04iu28xW0zYC0="
     },
-    "async-limiter": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.0.tgz",
-      "integrity": "sha512-jp/uFnooOiO+L211eZOoSyzpOITMXx1rBITauYykG3BRYPu8h0UcxsPNB04RR5vo4Tyz3+ay17tR6JVf9qzYWg=="
-    },
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
@@ -1465,12 +1460,9 @@
       }
     },
     "ws": {
-      "version": "6.0.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-6.0.0.tgz",
-      "integrity": "sha512-c2UlYcAZp1VS8AORtpq6y4RJIkJ9dQz18W32SpR/qXGfLDZ2jU4y4wKvvZwqbi7U6gxFQTeE+urMbXU/tsDy4w==",
-      "requires": {
-        "async-limiter": "~1.0.0"
-      }
+      "version": "7.4.6",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.6.tgz",
+      "integrity": "sha512-YmhHDO4MzaDLB+M9ym/mDA5z0naX8j7SIlT8f8z+I0VtzsRbekxEutHSme7NPS2qE8StCYQNUnfWdXta/Yu85A=="
     },
     "y18n": {
       "version": "3.2.1",
diff --git a/package.json b/package.json
index dd239c7..44a9214 100644
--- a/package.json
+++ b/package.json
@@ -24,6 +24,6 @@
         "mime": "^1.3.4",
         "mz": "2.4.0",
         "nunjucks": "2.4.2",
-        "ws": "^6.0.0"
+        "ws": "^7.4.6"
     }
 }