diff --git a/Gemfile b/Gemfile
index d49765c2..5192b178 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,4 +2,3 @@ source 'https://rubygems.org'
 
 gem 'github-pages'
 gem 'webrick'
-gem 'wdm'
diff --git a/package.json b/package.json
index a9ad69dd..cde481be 100644
--- a/package.json
+++ b/package.json
@@ -28,13 +28,13 @@
     "LICENSE"
   ],
   "dependencies": {
-    "spica": "0.0.777"
+    "spica": "0.0.781"
   },
   "devDependencies": {
     "@types/mocha": "10.0.6",
     "@types/power-assert": "1.5.12",
     "@types/prismjs": "1.26.3",
-    "@typescript-eslint/parser": "^6.20.0",
+    "@typescript-eslint/parser": "^6.21.0",
     "babel-loader": "^9.1.3",
     "babel-plugin-unassert": "^3.2.0",
     "concurrently": "^8.2.2",
@@ -48,13 +48,13 @@
     "karma-firefox-launcher": "^2.1.2",
     "karma-mocha": "^2.0.1",
     "karma-power-assert": "^1.0.0",
-    "mocha": "^10.2.0",
-    "npm-check-updates": "^16.14.14",
-    "semver": "^7.5.4",
+    "mocha": "^10.3.0",
+    "npm-check-updates": "^16.14.15",
+    "semver": "^7.6.0",
     "ts-loader": "^9.5.1",
     "typed-dom": "0.0.348",
     "typescript": "5.2.2",
-    "webpack": "^5.90.0",
+    "webpack": "^5.90.1",
     "webpack-cli": "^5.1.4",
     "webpack-merge": "^5.10.0"
   },