diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1618c07e6..74066b163 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -27,6 +27,13 @@ jobs:
           test -z "$diff"
       - name: Run tests
         run: npm test
+      - name: Build WASM binary
+        run: npm run build-wasm
+      - name: Upload WASM binary
+        uses: actions/upload-artifact@v3
+        with:
+          name: tree-sitter-kotlin.wasm
+          path: ./tree-sitter-kotlin.wasm
       - name: Set up Rust
         uses: actions-rs/toolchain@v1
         with: