diff --git a/package.json b/package.json
index 2ee9317..bd809d5 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "@types/mocha": "7.0.2",
     "acorn-walk": "7.1.1",
     "chai": "4.2.0",
-    "http-server": "0.12.3",
+    "http-server": "0.13.0",
     "karma": "5.1.0",
     "karma-chai": "0.1.0",
     "karma-chrome-launcher": "3.1.0",
diff --git a/yarn.lock b/yarn.lock
index 6c6c5a7..71b6da7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1001,16 +1001,6 @@ domain-browser@^4.0.0:
   resolved "https://registry.yarnpkg.com/domain-browser/-/domain-browser-4.4.0.tgz#6f0dd2bb97c93c247b87c3dedec4ec767298f945"
   integrity sha512-GpKOVUarVuWSPQaCiAD+bMa9yDDKXv2YvvBUqkoNvPckaDCp/Bcks/rwjlLbbE+27esQIogAtXtipLd90SEFFw==
 
-ecstatic@^3.3.2:
-  version "3.3.2"
-  resolved "https://registry.yarnpkg.com/ecstatic/-/ecstatic-3.3.2.tgz#6d1dd49814d00594682c652adb66076a69d46c48"
-  integrity sha512-fLf9l1hnwrHI2xn9mEDT7KIi22UDqA2jaCwyCbSUJh9a1V+LEUSL/JO/6TIz/QyuBURWUHrFL5Kg2TtO1bkkog==
-  dependencies:
-    he "^1.1.1"
-    mime "^1.6.0"
-    minimist "^1.1.0"
-    url-join "^2.0.5"
-
 ee-first@1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
@@ -1457,7 +1447,7 @@ hash.js@^1.0.0, hash.js@^1.0.3:
     inherits "^2.0.3"
     minimalistic-assert "^1.0.1"
 
-he@1.2.0, he@^1.1.1:
+he@1.2.0, he@^1.1.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/he/-/he-1.2.0.tgz#84ae65fa7eafb165fddb61566ae14baf05664f0f"
   integrity sha512-F/1DnUGPopORZi0ni+CvrCgHQ5FyEAHRLSApuYWMmrbSwoN2Mn/7k+Gl38gJnR7yyDZk6WLXwiGod1JOWNDKGw==
@@ -1496,21 +1486,23 @@ http-proxy@^1.18.0, http-proxy@^1.18.1:
     follow-redirects "^1.0.0"
     requires-port "^1.0.0"
 
-http-server@0.12.3:
-  version "0.12.3"
-  resolved "https://registry.yarnpkg.com/http-server/-/http-server-0.12.3.tgz#ba0471d0ecc425886616cb35c4faf279140a0d37"
-  integrity sha512-be0dKG6pni92bRjq0kvExtj/NrrAd28/8fCXkaI/4piTwQMSDSLMhWyW0NI1V+DBI3aa1HMlQu46/HjVLfmugA==
+http-server@0.13.0:
+  version "0.13.0"
+  resolved "https://registry.yarnpkg.com/http-server/-/http-server-0.13.0.tgz#ae7d9b718fbe88b7fb19360fcc2ae21e71d257da"
+  integrity sha512-/MjH9k/y470zbtXzKLkP8vioIVvxRArTkz8f9UX1ztkLZzr6S0hg6BW8h6MBn/HUfwjlTQvIe9DRknorN2u20Q==
   dependencies:
     basic-auth "^1.0.3"
     colors "^1.4.0"
     corser "^2.0.1"
-    ecstatic "^3.3.2"
+    he "^1.1.0"
     http-proxy "^1.18.0"
+    mime "^1.6.0"
     minimist "^1.2.5"
     opener "^1.5.1"
     portfinder "^1.0.25"
     secure-compare "3.0.1"
     union "~0.5.0"
+    url-join "^2.0.5"
 
 https-browserify@^1.0.0:
   version "1.0.0"
@@ -2070,7 +2062,7 @@ minimist@0.0.8:
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.8.tgz#857fcabfc3397d2625b8228262e86aa7a011b05d"
   integrity sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=
 
-minimist@1.x, minimist@^1.1.0:
+minimist@1.x:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
   integrity sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=