diff --git a/package.json b/package.json
index 7e799ef..08c1342 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
   },
   "devDependencies": {
     "common-tags": "^1.8.2",
-    "eslint": "^9.4.0",
+    "eslint": "^9.11.1",
     "eslint-config-eslint": "^11.0.0",
     "got": "^14.4.1",
     "lint-staged": "^15.2.0",
diff --git a/packages/compat/package.json b/packages/compat/package.json
index 1a6f697..23d60de 100644
--- a/packages/compat/package.json
+++ b/packages/compat/package.json
@@ -48,7 +48,7 @@
   },
   "homepage": "https://github.com/eslint/rewrite#readme",
   "devDependencies": {
-    "@types/eslint": "^9.6.0",
+    "@eslint/core": "^0.6.0",
     "c8": "^9.1.0",
     "eslint": "^9.0.0",
     "mocha": "^10.4.0",
diff --git a/packages/compat/src/fixup-rules.js b/packages/compat/src/fixup-rules.js
index 96916c2..1bad279 100644
--- a/packages/compat/src/fixup-rules.js
+++ b/packages/compat/src/fixup-rules.js
@@ -10,7 +10,7 @@
 /** @typedef {import("eslint").ESLint.Plugin} FixupPluginDefinition */
 /** @typedef {import("eslint").Rule.RuleModule} FixupRuleDefinition */
 /** @typedef {FixupRuleDefinition["create"]} FixupLegacyRuleDefinition */
-/** @typedef {import("eslint").Linter.FlatConfig} FixupConfig */
+/** @typedef {import("eslint").Linter.Config} FixupConfig */
 /** @typedef {Array<FixupConfig>} FixupConfigArray */
 
 //-----------------------------------------------------------------------------
diff --git a/packages/compat/src/ignore-file.js b/packages/compat/src/ignore-file.js
index 37d4b67..bd3a062 100644
--- a/packages/compat/src/ignore-file.js
+++ b/packages/compat/src/ignore-file.js
@@ -14,7 +14,7 @@ import path from "node:path";
 // Types
 //-----------------------------------------------------------------------------
 
-/** @typedef {import("eslint").Linter.FlatConfig} FlatConfig */
+/** @typedef {import("eslint").Linter.Config} FlatConfig */
 
 //-----------------------------------------------------------------------------
 // Exports
diff --git a/scripts/build.js b/scripts/build.js
index 2200225..048b38a 100644
--- a/scripts/build.js
+++ b/scripts/build.js
@@ -57,6 +57,12 @@ async function calculatePackageDependencies(packageDirs) {
 					}
 				}
 
+				if (pkg.devDependencies) {
+					for (const dep of Object.keys(pkg.devDependencies)) {
+						dependencies.add(dep);
+					}
+				}
+
 				return [
 					pkg.name,
 					{ name: pkg.name, dir: packageDir, dependencies },