diff --git a/package.json b/package.json
index 0ec61a2..011b784 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
   "devDependencies": {
     "@types/eslint": "^8.40.0",
     "cross-env": "^7.0.3",
-    "eslint": "^9.0.0",
+    "eslint": "^9.4.0",
     "jest": "^29.7.0",
     "js-green-licenses": "^4.0.0"
   }
diff --git a/packages/eslint-config/index.js b/packages/eslint-config/index.js
index 895aa14..8396a39 100644
--- a/packages/eslint-config/index.js
+++ b/packages/eslint-config/index.js
@@ -122,9 +122,6 @@ export default {
         // https://eslint.org/docs/latest/rules/no-new-native-nonconstructor
         'no-new-native-nonconstructor': 2,
 
-        // TODO: 削除 https://eslint.org/docs/rules/no-new-symbol
-        'no-new-symbol': 2,
-
         // https://eslint.org/docs/rules/no-obj-calls
         'no-obj-calls': 2,
 
@@ -201,8 +198,8 @@ export default {
         // https://eslint.org/docs/rules/no-use-before-define
         'no-use-before-define': 2,
 
-        // TODO:
-        'no-useless-assignment': 0,
+        // https://eslint.org/docs/latest/rules/no-useless-assignment
+        'no-useless-assignment': 2,
 
         // https://eslint.org/docs/rules/no-useless-backreference
         'no-useless-backreference': 2,
@@ -355,9 +352,6 @@ export default {
         // https://eslint.org/docs/rules/max-statements
         'max-statements': 0,
 
-        // TODO: 削除 https://eslint.org/docs/rules/multiline-comment-style
-        'multiline-comment-style': 2,
-
         // https://eslint.org/docs/rules/new-cap
         'new-cap': 2,
 
@@ -612,9 +606,6 @@ export default {
         // https://eslint.org/docs/rules/no-useless-computed-key
         'no-useless-computed-key': [
             2,
-            {
-                enforceForClassMembers: true,
-            },
         ],
 
         // https://eslint.org/docs/rules/no-useless-concat
@@ -773,9 +764,6 @@ export default {
          * Layout & Formatting
          */
 
-        // TODO: 削除 https://eslint.org/docs/rules/line-comment-position
-        'line-comment-position': 0,
-
         // https://eslint.org/docs/rules/unicode-bom
         'unicode-bom': [
             1,
diff --git a/packages/eslint-config/package.json b/packages/eslint-config/package.json
index 0a238dc..d4dcaf7 100644
--- a/packages/eslint-config/package.json
+++ b/packages/eslint-config/package.json
@@ -27,6 +27,6 @@
     "directory": "packages/eslint-config"
   },
   "peerDependencies": {
-    "eslint": ">= 9.0.0"
+    "eslint": ">= 9.4.0"
   }
 }