diff --git a/.tangled/workflows/build.yaml b/.tangled/workflows/build.yaml
index 01fd9a3..21286d8 100644
--- a/.tangled/workflows/build.yaml
+++ b/.tangled/workflows/build.yaml
@@ -11,13 +11,15 @@ clone:
 
 dependencies:
   nixpkgs:
-    - python3
-    - python3Packages.fastapi
+    - pdm
     - nodejs
 
 steps:
+  - name: "Build via PDM"
+    command: "pdm install"
+
   - name: "Generate OpenAPI specs"
-    command: "python3 generate.py"
+    command: "pdm run python generate.py"
 
   - name: "Deploy to Cloudflare Pages"
-    command: "npx --yes wrangler pages deploy --branch main --project-name oa-specs ./specs"
\ No newline at end of file
+    command: "npx --yes wrangler pages deploy --branch main --project-name oa-specs ./specs"