diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4d76daf0fb56..9b08ea20a1c6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Allow `_` before numbers during candidate extraction ([#17961](https://github.com/tailwindlabs/tailwindcss/pull/17961))
+- Upgrade: Fix error when using `@import … source(…)` ([#17963](https://github.com/tailwindlabs/tailwindcss/pull/17963))
 
 ## [4.1.6] - 2025-05-09
 
diff --git a/packages/@tailwindcss-upgrade/src/codemods/css/analyze.ts b/packages/@tailwindcss-upgrade/src/codemods/css/analyze.ts
index c27f5c956346..954d8ce0f869 100644
--- a/packages/@tailwindcss-upgrade/src/codemods/css/analyze.ts
+++ b/packages/@tailwindcss-upgrade/src/codemods/css/analyze.ts
@@ -39,7 +39,7 @@ export async function analyze(stylesheets: Stylesheet[]) {
       AtRule: {
         import(node) {
           // Find what the import points to
-          let id = node.params.match(/['"](.*)['"]/)?.[1]
+          let id = node.params.match(/['"](.*?)['"]/)?.[1]
           if (!id) return
 
           let basePath = node.source?.input.file