diff --git a/.github/workflows/python.yml b/.github/workflows/python.yml
index db484851..3e8a76b1 100644
--- a/.github/workflows/python.yml
+++ b/.github/workflows/python.yml
@@ -29,4 +29,5 @@ jobs:
       with:
         user: __token__
         password: ${{ secrets.UPATH_GIT_REPO }}
-        verbose: true
\ No newline at end of file
+        verbose: true
+        skip_existing: true
\ No newline at end of file
diff --git a/noxfile.py b/noxfile.py
index d36cd4c8..4d8872b3 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -18,7 +18,7 @@ def smoke(session):
     session.run(*"pytest --skiphdfs upath".split())
 
 
-@nox.session(python=False)
+@nox.session(python=['3.7', '3.8'])
 def build(session):
     session.install("flit")
     session.run(*"flit build".split())