diff --git a/.buildkite/emscripten.yml b/.buildkite/emscripten.yml
--- a/.buildkite/emscripten.yml
+++ b/.buildkite/emscripten.yml
@@ -1,10 +1,18 @@
 steps:
   - label: 'Emscripten build'
     command:
+      - 'apt update && apt install -y autoconf libtool build-essential cmake git'
       - 'cd web'
-      - 'nix develop --accept-flake-config --command yarn build-db-wasm'
-      - 'git diff --exit-code'
+      - 'BEFORE_HASH=$(sha256sum ./database/_generated/comm_query_executor.wasm)'
+      - './scripts/run_emscripten.sh'
+      - 'AFTER_HASH=$(sha256sum ./database/_generated/comm_query_executor.wasm)'
+      - '[[ "$BEFORE_HASH" == "$AFTER_HASH" ]] || exit 1'
     retry:
       automatic: true
+    plugins:
+      - docker#v5.3.0:
+          image: 'emscripten/emsdk:3.1.17'
+          propagate-environment: true
+          shell: ['/bin/bash', '-e', '-c']
     agents:
-      - 'mac=true'
+      - 'autoscaling=true'