diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c11c3936..c411fde9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,8 +9,41 @@ on:
       - main
 
 jobs:
+  ppx_build_linux:
+    name: ppx_build_linux
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: packages/ppx/src
+    container:
+      image: ocaml/opam:alpine-3.16-ocaml-4.12
+      options: --user root
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Opam init
+        run: opam init -a --disable-sandboxing --compiler=4.12.1
+
+      - name: Install deps
+        run: opam install . --deps-only --with-test
+
+      - name: Build
+        run: opam exec -- dune build --profile static
+
+      - name: Copy built PPX file
+        run: |
+          mv ./_build/default/bin/bin.exe ppx.exe
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@master
+        with:
+          name: ppx_build_linux
+          path: src/ppx.exe
+          if-no-files-found: error
+
   test:
     name: Test
+    needs: [ppx_build_linux]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
@@ -21,6 +54,12 @@ jobs:
           cache: "pnpm"
       - run: pnpm install
 
+      - name: Download ppx linux artifacts
+        uses: actions/download-artifact@master
+        with:
+          name: ppx_build_linux
+          path: binaries/linux
+
       - run: npm run res:build
         working-directory: packages/tests
 
@@ -51,6 +90,7 @@ jobs:
 
   benchmark:
     name: Benchmark
+    needs: [ppx_build_linux]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
@@ -61,6 +101,12 @@ jobs:
           cache: "pnpm"
       - run: pnpm install
 
+      - name: Download ppx linux artifacts
+        uses: actions/download-artifact@master
+        with:
+          name: ppx_build_linux
+          path: binaries/linux
+
       - run: npm run res:build
         working-directory: packages/prepack
 
diff --git a/package.json b/package.json
index eb1d2818..931b0158 100644
--- a/package.json
+++ b/package.json
@@ -56,7 +56,8 @@
     "res": "rescript build -with-deps -w",
     "test:res": "pnpm --filter=tests res",
     "test": "ava",
-    "prepack": "node ./packages/prepack/src/Prepack.bs.mjs"
+    "prepack": "node ./packages/prepack/src/Prepack.bs.mjs",
+    "ppx:install": "node ./packages/ppx/install.cjs"
   },
   "ava": {
     "extensions": {
diff --git a/packages/ppx/.npmignore b/packages/ppx/.npmignore
deleted file mode 100644
index ffdd3817..00000000
--- a/packages/ppx/.npmignore
+++ /dev/null
@@ -1,11 +0,0 @@
-.github
-.vscode
-examples
-test
-src/bin
-src/ppx
-src/.ocamlformat
-src/dune
-src/dune-project
-src/dune-workspace
-src/ppx_struct.opam
diff --git a/packages/ppx/install.js b/packages/ppx/install.cjs
similarity index 97%
rename from packages/ppx/install.js
rename to packages/ppx/install.cjs
index fe2edbdc..459bbf59 100644
--- a/packages/ppx/install.js
+++ b/packages/ppx/install.cjs
@@ -10,7 +10,7 @@ const installMacLinuxBinary = (binary) => {
     fs.renameSync(source, target);
 
     // The ppx should be executable in the bundle, but just in case
-    fs.chmodSync(target, 0777);
+    fs.chmodSync(target, 0o777);
   } else {
     // assume we're in dev mode - nothing will break if the script
     // isn't overwritten, it will just be slower