diff --git a/CHANGELOG.md b/CHANGELOG.md
index c2686352696a..f942955a86cd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -29,6 +29,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Refactor gradient implementation to work around [prettier/prettier#17058](https://github.com/prettier/prettier/issues/17058) ([#16072](https://github.com/tailwindlabs/tailwindcss/pull/16072))
 - Vite: Ensure hot-reloading works with SolidStart setups ([#16052](https://github.com/tailwindlabs/tailwindcss/pull/16052))
 - Vite: Fix a crash when starting the development server in SolidStart setups ([#16052](https://github.com/tailwindlabs/tailwindcss/pull/16052))
+- Adding a warning in the upgrade CLI when a config file contains non-migratable values. ([#16113](https://github.com/tailwindlabs/tailwindcss/pull/16113))
+- Prevent camelCasing CSS custom properties added by JavaScript plugins ([#16103](https://github.com/tailwindlabs/tailwindcss/pull/16103))
 - Vite: Don't rebase URLs that appear to be aliases ([#16078](https://github.com/tailwindlabs/tailwindcss/pull/16078))
 - Vite: Transform `<style>` blocks in HTML files ([#16069](https://github.com/tailwindlabs/tailwindcss/pull/16069))
 - Prevent camel-casing CSS custom properties added by JavaScript plugins ([#16103](https://github.com/tailwindlabs/tailwindcss/pull/16103))
diff --git a/packages/@tailwindcss-upgrade/src/migrate-js-config.ts b/packages/@tailwindcss-upgrade/src/migrate-js-config.ts
index c05ee6babebe..3d285603cb9f 100644
--- a/packages/@tailwindcss-upgrade/src/migrate-js-config.ts
+++ b/packages/@tailwindcss-upgrade/src/migrate-js-config.ts
@@ -298,6 +298,8 @@ function canMigrateConfig(unresolvedConfig: Config, source: string): boolean {
   ]
 
   if (Object.keys(unresolvedConfig).some((key) => !knownProperties.includes(key))) {
+    let extraKeys = Object.keys(unresolvedConfig).filter(key => !knownProperties.includes(key))
+    info(`We have detected that your configuration file contains non-migratable values : ${highlight(extraKeys.join(', '))}`, { prefix: '↳ ' })
     return false
   }