diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 3fb1a6c..3ae467c 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -37,6 +37,9 @@ jobs:
       - name: Unit tests
         run: pnpm test
 
+      - name: Build
+        run: pnpm build
+
       - name: Publish
         run: pnpm release
         env:
diff --git a/package.json b/package.json
index fde153e..20b7fbf 100644
--- a/package.json
+++ b/package.json
@@ -11,6 +11,9 @@
     "test:watch": "vitest watch",
     "release": "release publish"
   },
+  "files": [
+    "build"
+  ],
   "keywords": [
     "http",
     "message",
@@ -29,4 +32,4 @@
     "@open-draft/deferred-promise": "^2.2.0",
     "outvariant": "^1.4.0"
   }
-}
\ No newline at end of file
+}