diff --git a/packages/compat/build.config.ts b/packages/compat/build.config.ts
index 8d091fd6..a0bbfd94 100644
--- a/packages/compat/build.config.ts
+++ b/packages/compat/build.config.ts
@@ -16,5 +16,6 @@ export default defineBuildConfig({
   externals: [
     'hast',
     'shiki',
+    /^@shikijs[\\/].*/,
   ],
 })
diff --git a/vitest.config.ts b/vitest.config.ts
index 264a606c..6ee7b8f1 100644
--- a/vitest.config.ts
+++ b/vitest.config.ts
@@ -12,6 +12,7 @@ export default defineConfig({
     exclude: [
       '**/vendor/**',
       '**/node_modules/**',
+      '**/tm-grammars-themes/**',
     ],
     server: {
       deps: {