diff --git a/spec/tang_app/package.json b/spec/tang_app/package.json
index 1340656..5eadbcc 100644
--- a/spec/tang_app/package.json
+++ b/spec/tang_app/package.json
@@ -10,7 +10,7 @@
     "babel-plugin-macros": "^3.1.0",
     "jquery": "^3.6.4",
     "webpack": "^5.51.1",
-    "webpack-cli": "^4.8.0"
+    "webpack-cli": "^5.1.1"
   },
   "devDependencies": {
     "@webpack-cli/serve": "^2.0.1",
diff --git a/spec/tang_app/yarn.lock b/spec/tang_app/yarn.lock
index 78a1e24..5bc67a4 100644
--- a/spec/tang_app/yarn.lock
+++ b/spec/tang_app/yarn.lock
@@ -1413,6 +1413,11 @@
   resolved "https://registry.yarnpkg.com/@webpack-cli/configtest/-/configtest-1.2.0.tgz#7b20ce1c12533912c3b217ea68262365fa29a6f5"
   integrity sha512-4FB8Tj6xyVkyqjj1OaTqCjXYULB9FMkqQ8yGrZjRDrYh0nOE+7Lhs45WioWQQMV+ceFlE368Ukhe6xdvJM9Egg==
 
+"@webpack-cli/configtest@^2.1.0":
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/@webpack-cli/configtest/-/configtest-2.1.0.tgz#b59b33377b1b896a9a7357cfc643b39c1524b1e6"
+  integrity sha512-K/vuv72vpfSEZoo5KIU0a2FsEoYdW0DUMtMpB5X3LlUwshetMZRZRxB7sCsVji/lFaSxtQQ3aM9O4eMolXkU9w==
+
 "@webpack-cli/info@^1.5.0":
   version "1.5.0"
   resolved "https://registry.yarnpkg.com/@webpack-cli/info/-/info-1.5.0.tgz#6c78c13c5874852d6e2dd17f08a41f3fe4c261b1"
@@ -1420,15 +1425,20 @@
   dependencies:
     envinfo "^7.7.3"
 
+"@webpack-cli/info@^2.0.1":
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/@webpack-cli/info/-/info-2.0.1.tgz#eed745799c910d20081e06e5177c2b2569f166c0"
+  integrity sha512-fE1UEWTwsAxRhrJNikE7v4EotYflkEhBL7EbajfkPlf6E37/2QshOy/D48Mw8G5XMFlQtS6YV42vtbG9zBpIQA==
+
 "@webpack-cli/serve@^1.7.0":
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/@webpack-cli/serve/-/serve-1.7.0.tgz#e1993689ac42d2b16e9194376cfb6753f6254db1"
   integrity sha512-oxnCNGj88fL+xzV+dacXs44HcDwf1ovs3AuEzvP7mqXw7fQntqIhQ1BRmynh4qEKQSSSRSWVyXRjmTbZIX9V2Q==
 
-"@webpack-cli/serve@^2.0.1":
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/@webpack-cli/serve/-/serve-2.0.1.tgz#34bdc31727a1889198855913db2f270ace6d7bf8"
-  integrity sha512-0G7tNyS+yW8TdgHwZKlDWYXFA6OJQnoLCQvYKkQP0Q2X205PSQ6RNUj0M+1OB/9gRQaUZ/ccYfaxd0nhaWKfjw==
+"@webpack-cli/serve@^2.0.1", "@webpack-cli/serve@^2.0.4":
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/@webpack-cli/serve/-/serve-2.0.4.tgz#3982ee6f8b42845437fc4d391e93ac5d9da52f0f"
+  integrity sha512-0xRgjgDLdz6G7+vvDLlaRpFatJaJ69uTalZLRSMX5B3VUrDmXcrVA3+6fXXQgmYz7bY9AAgs348XQdmtLsK41A==
 
 "@xtuc/ieee754@^1.2.0":
   version "1.2.0"
@@ -1778,6 +1788,11 @@ colorette@^2.0.10, colorette@^2.0.14:
   resolved "https://registry.yarnpkg.com/colorette/-/colorette-2.0.19.tgz#cdf044f47ad41a0f4b56b3a0d5b4e6e1a2d5a798"
   integrity sha512-3tlv/dIP7FWvj3BsbHrGLJ6l/oKh1O3TcgBqMn+yyCagOxc23fyzDS6HypQbgxWbkpDnf52p1LuR4eWDQ/K9WQ==
 
+commander@^10.0.1:
+  version "10.0.1"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-10.0.1.tgz#881ee46b4f77d1c1dccc5823433aa39b022cbe06"
+  integrity sha512-y4Mg2tXshplEbSGzx7amzPwKKOCGuoSRP/CjEdwwk0FOGlUbq6lKuoyDZTNZkmxHdJtp54hdfY/JUrdL7Xfdug==
+
 commander@^2.20.0:
   version "2.20.3"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
@@ -2432,6 +2447,11 @@ interpret@^2.2.0:
   resolved "https://registry.yarnpkg.com/interpret/-/interpret-2.2.0.tgz#1a78a0b5965c40a5416d007ad6f50ad27c417df9"
   integrity sha512-Ju0Bz/cEia55xDwUWEa8+olFpCiQoypjnQySseKtmjNrnps3P+xfpUmGr90T7yjlVJmOtybRvPXhKMbHr+fWnw==
 
+interpret@^3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/interpret/-/interpret-3.1.1.tgz#5be0ceed67ca79c6c4bc5cf0d7ee843dcea110c4"
+  integrity sha512-6xwYfHbajpoF0xLW+iwLkhwgvLoZDfjYfoFNu8ftMoXINzwuymNLd9u/KmwtdT2GbR+/Cz66otEGEVVUHX9QLQ==
+
 ipaddr.js@1.9.1:
   version "1.9.1"
   resolved "https://registry.yarnpkg.com/ipaddr.js/-/ipaddr.js-1.9.1.tgz#bff38543eeb8984825079ff3a2a8e6cbd46781b3"
@@ -2454,6 +2474,13 @@ is-binary-path@~2.1.0:
   dependencies:
     binary-extensions "^2.0.0"
 
+is-core-module@^2.11.0:
+  version "2.12.0"
+  resolved "https://registry.yarnpkg.com/is-core-module/-/is-core-module-2.12.0.tgz#36ad62f6f73c8253fd6472517a12483cf03e7ec4"
+  integrity sha512-RECHCBCd/viahWmwj6enj19sKbHfJrddi/6cBDsNTKbNq0f7VeaUkBo60BqzvPqo/W54ChS62Z5qyun7cfOMqQ==
+  dependencies:
+    has "^1.0.3"
+
 is-core-module@^2.9.0:
   version "2.10.0"
   resolved "https://registry.yarnpkg.com/is-core-module/-/is-core-module-2.10.0.tgz#9012ede0a91c69587e647514e1d5277019e728ed"
@@ -3084,6 +3111,13 @@ rechoir@^0.7.0:
   dependencies:
     resolve "^1.9.0"
 
+rechoir@^0.8.0:
+  version "0.8.0"
+  resolved "https://registry.yarnpkg.com/rechoir/-/rechoir-0.8.0.tgz#49f866e0d32146142da3ad8f0eff352b3215ff22"
+  integrity sha512-/vxpCXddiX8NGfGO/mTafwjq4aFa/71pvamip0++IQk3zG8cbCj0fifNPrjjF1XMXUne91jL9OoxmdykoEtifQ==
+  dependencies:
+    resolve "^1.20.0"
+
 regenerate-unicode-properties@^10.1.0:
   version "10.1.0"
   resolved "https://registry.yarnpkg.com/regenerate-unicode-properties/-/regenerate-unicode-properties-10.1.0.tgz#7c3192cab6dd24e21cb4461e5ddd7dd24fa8374c"
@@ -3173,6 +3207,15 @@ resolve@^1.14.2, resolve@^1.19.0, resolve@^1.9.0:
     path-parse "^1.0.7"
     supports-preserve-symlinks-flag "^1.0.0"
 
+resolve@^1.20.0:
+  version "1.22.2"
+  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.22.2.tgz#0ed0943d4e301867955766c9f3e1ae6d01c6845f"
+  integrity sha512-Sb+mjNHOULsBv818T40qSPeRiuWLyaGMa5ewydRLFimneixmVy2zdivRl+AF6jaYPC8ERxGDmFSiqui6SfPd+g==
+  dependencies:
+    is-core-module "^2.11.0"
+    path-parse "^1.0.7"
+    supports-preserve-symlinks-flag "^1.0.0"
+
 retry@^0.13.1:
   version "0.13.1"
   resolved "https://registry.yarnpkg.com/retry/-/retry-0.13.1.tgz#185b1587acf67919d63b357349e03537b2484658"
@@ -3632,6 +3675,25 @@ webpack-cli@^4.8.0:
     rechoir "^0.7.0"
     webpack-merge "^5.7.3"
 
+webpack-cli@^5.1.1:
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/webpack-cli/-/webpack-cli-5.1.1.tgz#c211ac6d911e77c512978f7132f0d735d4a97ace"
+  integrity sha512-OLJwVMoXnXYH2ncNGU8gxVpUtm3ybvdioiTvHgUyBuyMLKiVvWy+QObzBsMtp5pH7qQoEuWgeEUQ/sU3ZJFzAw==
+  dependencies:
+    "@discoveryjs/json-ext" "^0.5.0"
+    "@webpack-cli/configtest" "^2.1.0"
+    "@webpack-cli/info" "^2.0.1"
+    "@webpack-cli/serve" "^2.0.4"
+    colorette "^2.0.14"
+    commander "^10.0.1"
+    cross-spawn "^7.0.3"
+    envinfo "^7.7.3"
+    fastest-levenshtein "^1.0.12"
+    import-local "^3.0.2"
+    interpret "^3.1.1"
+    rechoir "^0.8.0"
+    webpack-merge "^5.7.3"
+
 webpack-dev-middleware@^5.3.1:
   version "5.3.3"
   resolved "https://registry.yarnpkg.com/webpack-dev-middleware/-/webpack-dev-middleware-5.3.3.tgz#efae67c2793908e7311f1d9b06f2a08dcc97e51f"