diff --git a/package.json b/package.json
index 1581170..037c0d6 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
   "devDependencies": {
     "grunt": "^1.4.0",
     "grunt-cli": "^1.4.2",
-    "grunt-contrib-connect": "^3.0.0",
+    "grunt-contrib-connect": "^4.0.0",
     "grunt-contrib-copy": "^1.0.0",
     "grunt-contrib-watch": "^1.1.0",
     "grunt-eslint": "^24.0.0"
diff --git a/yarn.lock b/yarn.lock
index 0051e8c..a453d53 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -348,6 +348,11 @@ deep-is@^0.1.3:
   resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz#b369d6fb5dbc13eecf524f91b070feedc357cf34"
   integrity sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=
 
+define-lazy-prop@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/define-lazy-prop/-/define-lazy-prop-2.0.0.tgz#3f7ae421129bcaaac9bc74905c98a0009ec9ee7f"
+  integrity sha512-Ds09qNh8yw3khSjiJjiUInaGX9xlqZDY7JVryGxdxV7NPeuqQfplOpQ66yJFZut3jLa5zOwkXw1g9EI2uKh4Og==
+
 depd@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/depd/-/depd-1.1.2.tgz#9bcd52e14c097763e749b274c4346ed2e560b5a9"
@@ -798,17 +803,17 @@ grunt-cli@^1.4.2, grunt-cli@~1.4.3:
     nopt "~4.0.1"
     v8flags "~3.2.0"
 
-grunt-contrib-connect@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/grunt-contrib-connect/-/grunt-contrib-connect-3.0.0.tgz#720e9ef39f976b804baf994345c2f6ecfdf3b264"
-  integrity sha512-L1GXk6PqDP/meX0IOX1MByBvOph6h8Pvx4/iBIYD7dpokVCAAQPR/IIV1jkTONEM09xig/Y8/y3R9Fqc8U3HSA==
+grunt-contrib-connect@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/grunt-contrib-connect/-/grunt-contrib-connect-4.0.0.tgz#b0ccc748ef3c1f51dd2ae21aceea0666456211a5"
+  integrity sha512-VR2/+ailwTClAXrvI7bK78roCZzfY1C48vmpdRldohx8P1VXcb51NmBNhukBvG2RKFChNheEcKEcM+wSb/5nYA==
   dependencies:
     async "^3.2.0"
     connect "^3.7.0"
     connect-livereload "^0.6.1"
     morgan "^1.10.0"
     node-http2 "^4.0.1"
-    opn "^6.0.0"
+    open "^8.0.0"
     portscanner "^2.2.0"
     serve-index "^1.9.1"
     serve-static "^1.14.1"
@@ -1039,6 +1044,11 @@ is-core-module@^2.2.0:
   dependencies:
     has "^1.0.3"
 
+is-docker@^2.0.0, is-docker@^2.1.1:
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/is-docker/-/is-docker-2.2.1.tgz#33eeabe23cfe86f14bde4408a02c0cfb853acdaa"
+  integrity sha512-F+i2BKsFrH66iaUFc0woD8sLy8getkwTwtOBjvs56Cx4CgJDeKQeqfz8wAYiSb8JOprWhHH5p77PbmYCvvUuXQ==
+
 is-extglob@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/is-extglob/-/is-extglob-2.1.1.tgz#a88c02535791f02ed37c76a1b9ea9773c833f8c2"
@@ -1101,10 +1111,12 @@ is-windows@^1.0.1:
   resolved "https://registry.yarnpkg.com/is-windows/-/is-windows-1.0.2.tgz#d1850eb9791ecd18e6182ce12a30f396634bb19d"
   integrity sha512-eXK1UInq2bPmjyX6e3VHIzMLobc4J94i4AWn+Hpq3OU5KkrRC96OAcR3PRJ/pGu6m8TRnBHP9dkXQVsT/COVIA==
 
-is-wsl@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/is-wsl/-/is-wsl-1.1.0.tgz#1f16e4aa22b04d1336b66188a66af3c600c3a66d"
-  integrity sha1-HxbkqiKwTRM2tmGIpmrzxgDDpm0=
+is-wsl@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/is-wsl/-/is-wsl-2.2.0.tgz#74a4c76e77ca9fd3f932f290c17ea326cd157271"
+  integrity sha512-fKzAra0rGJUUBwGBgNkHZuToZcn+TtXHpeCgmkMJMMYx1sQDYaCSyjJBSCa2nH1DGm7s3n1oBnohoVTBaN7Lww==
+  dependencies:
+    is-docker "^2.0.0"
 
 isarray@~1.0.0:
   version "1.0.0"
@@ -1410,12 +1422,14 @@ once@^1.3.0, once@^1.4.0:
   dependencies:
     wrappy "1"
 
-opn@^6.0.0:
-  version "6.0.0"
-  resolved "https://registry.yarnpkg.com/opn/-/opn-6.0.0.tgz#3c5b0db676d5f97da1233d1ed42d182bc5a27d2d"
-  integrity sha512-I9PKfIZC+e4RXZ/qr1RhgyCnGgYX0UEIlXgWnCOVACIvFgaC9rz6Won7xbdhoHrd8IIhV7YEpHjreNUNkqCGkQ==
+open@^8.0.0:
+  version "8.4.2"
+  resolved "https://registry.yarnpkg.com/open/-/open-8.4.2.tgz#5b5ffe2a8f793dcd2aad73e550cb87b59cb084f9"
+  integrity sha512-7x81NCL719oNbsq/3mh+hVrAWmFuEYUqrq/Iw3kUzH8ReypT9QQ0BLoJS7/G9k6N81XjW4qHWtjWwe/9eLy1EQ==
   dependencies:
-    is-wsl "^1.1.0"
+    define-lazy-prop "^2.0.0"
+    is-docker "^2.1.1"
+    is-wsl "^2.2.0"
 
 optionator@^0.9.1:
   version "0.9.1"