diff --git a/src/usage/scanner.ts b/src/usage/scanner.ts
index 3811012..5f9808e 100644
--- a/src/usage/scanner.ts
+++ b/src/usage/scanner.ts
@@ -1,7 +1,8 @@
 import fs from "node:fs";
 import path from "node:path";
+// Shared with lockfile scanning in utils/file.ts; additions affect both code paths.
+import { EXCLUDED_DIRS } from "../constants.js";
 
-const IGNORED_DIRS = new Set(["node_modules", ".git", "dist", "build", "coverage"]);
 const ALLOWED_EXTS = new Set([".js", ".jsx", ".ts", ".tsx", ".mjs", ".cjs"]);
 
 // Matches:
@@ -57,7 +58,7 @@ export function scanProjectForPackageUsage(
       const fullPath = path.join(dir, entry.name);
 
       if (entry.isDirectory()) {
-        if (!IGNORED_DIRS.has(entry.name) && !entry.name.startsWith(".")) {
+        if (!EXCLUDED_DIRS.has(entry.name) && !entry.name.startsWith(".")) {
           walk(fullPath);
         }
       } else if (entry.isFile()) {