diff --git a/src/signals/path-matchers.ts b/src/signals/path-matchers.ts
index 6a62739a3e..aa5467ef8a 100644
--- a/src/signals/path-matchers.ts
+++ b/src/signals/path-matchers.ts
@@ -65,7 +65,7 @@ function isGeneratedFileFrom(parts: NormalizedPath): boolean {
     // Source maps for every first-class JS/TS bundle extension. `.mjs`/`.cjs` are already
     // recognized code extensions (isCodeFile), so their bundlers' `.mjs.map` / `.cjs.map`
     // maps are generated output too — the same as `.js.map`.
-    /\.(js|jsx|mjs|cjs|ts|tsx|mts|cts|vue|svelte|astro|css)\.map$/.test(norm) ||
+    /\.(js|jsx|mjs|cjs|ts|tsx|mts|cts|vue|svelte|astro|scss|less|css)\.map$/.test(norm) ||
     base === "worker-configuration.d.ts"
   );
 }
diff --git a/test/unit/path-matchers.test.ts b/test/unit/path-matchers.test.ts
index 7ab5bffcd2..750185e4ae 100644
--- a/test/unit/path-matchers.test.ts
+++ b/test/unit/path-matchers.test.ts
@@ -50,6 +50,8 @@ describe("isGeneratedFile", () => {
       "dist/App.vue.map",
       "dist/Card.svelte.map",
       "dist/page.astro.map",
+      "dist/styles.scss.map",
+      "dist/theme.less.map",
     ]) {
       expect(isGeneratedFile(path)).toBe(true);
     }