diff --git a/.forgejo/workflows/build.yaml b/.forgejo/workflows/build.yaml
index d12bb9f..dbde7c8 100644
--- a/.forgejo/workflows/build.yaml
+++ b/.forgejo/workflows/build.yaml
@@ -50,7 +50,9 @@ jobs:
           source venv/bin/activate
           pip install -r requirements.txt
       - name: Build Rust code
-        run: maturin develop
+        run: |
+          source venv/bin/activate
+          maturin develop
       - name: Run Python tests
         run: |
           source venv/bin/activate