diff --git a/.buildkite/emscripten.yml b/.buildkite/emscripten.yml
new file mode 100644
index 000000000..e111812e5
--- /dev/null
+++ b/.buildkite/emscripten.yml
@@ -0,0 +1,8 @@
+steps:
+  - label: 'Emscripten build'
+    command:
+      - 'cd web'
+      - 'nix develop --accept-flake-config --command yarn build-db-wasm'
+      - 'git diff --exit-code'
+    agents:
+      - 'mac=true'