diff --git a/.github/workflows/size-limit.yml b/.github/workflows/size-limit.yml
index cb532868..119cc8c3 100644
--- a/.github/workflows/size-limit.yml
+++ b/.github/workflows/size-limit.yml
@@ -1,4 +1,4 @@
-name: "size"
+name: "Bundle Size check @excalidraw/excalidraw"
 on:
   pull_request:
     branches:
@@ -15,12 +15,10 @@ jobs:
         uses: actions/setup-node@v3
         with:
           node-version: 18.x
-      - name: Install and build
-        run: yarn --frozen-lockfile
         env:
           CI: true
       - uses: andresz1/size-limit-action@v1
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
-          build_script: build:app
+          build_script: size
           skip_step: install
diff --git a/package.json b/package.json
index 54c45c9a..44251d31 100644
--- a/package.json
+++ b/package.json
@@ -146,13 +146,13 @@
     "autorelease": "node scripts/autorelease.js",
     "prerelease": "node scripts/prerelease.js",
     "release": "node scripts/release.js",
-    "size": "yarn build:app && size-limit"
+    "size": "node scripts/buildPackageExcalidraw.js && size-limit"
   },
   "size-limit": [
     {
-      "limit": "500kb",
       "path": [
-        "build/static/js/*.js"
+        "src/packages/excalidraw/dist/excalidraw.development.js",
+        "src/packages/excalidraw/dist/excalidraw.production.min.js"
       ]
     }
   ]
diff --git a/scripts/buildPackageExcalidraw.js b/scripts/buildPackageExcalidraw.js
new file mode 100644
index 00000000..4e323411
--- /dev/null
+++ b/scripts/buildPackageExcalidraw.js
@@ -0,0 +1,16 @@
+const { execSync } = require("child_process");
+
+const excalidrawDir = `${__dirname}/../src/packages/excalidraw`;
+
+const build = () => {
+  try {
+    execSync(`yarn  --frozen-lockfile`);
+    execSync(`yarn --frozen-lockfile`, { cwd: excalidrawDir });
+    execSync(`yarn run build:umd`, { cwd: excalidrawDir });
+  } catch (err) {
+    console.error(err);
+    process.exit(1);
+  }
+};
+
+build();