diff --git a/CHANGELOG.md b/CHANGELOG.md
index c6c0fa7f4f84..e0958ba4c655 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,7 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-- Nothing yet!
+### Fixed
+
+- Ensure the TypeScript types for `PluginsConfig` allow `undefined` values ([#14668](https://github.com/tailwindlabs/tailwindcss/pull/14668))
 
 ## [3.4.15] - 2024-11-14
 
diff --git a/types/config.d.ts b/types/config.d.ts
index 2c95a6dec67f..64fbf63c4878 100644
--- a/types/config.d.ts
+++ b/types/config.d.ts
@@ -344,9 +344,12 @@ export interface PluginAPI {
 export type PluginCreator = (api: PluginAPI) => void
 export type PluginsConfig = (
   | PluginCreator
-  | { handler: PluginCreator; config?: Partial<Config> }
+  | { handler: PluginCreator; config?: Partial<Config> | undefined }
   | {
-      (options: any): { handler: PluginCreator; config?: Partial<Config> }
+      (options: any): {
+        handler: PluginCreator;
+        config?: Partial<Config> | undefined;
+      };
       __isOptionsFunction: true
     }
 )[]