diff --git a/.github/workflows/python-request.yml b/.github/workflows/python-request.yml
index 0bda629..492a9e5 100644
--- a/.github/workflows/python-request.yml
+++ b/.github/workflows/python-request.yml
@@ -5,6 +5,14 @@ name: Python on pull request
 
 on:
   pull_request:
+    paths:
+      - gravity_toolkit/**
+      - scripts/**
+      - test/**
+      - .github/workflows/python-request.yml
+  schedule:
+    # * is a special character in YAML so you have to quote this string
+    - cron:  '0 0 1 * *'
 
 jobs:
   build:
diff --git a/doc/source/_assets/gravity-refs.bib b/doc/source/_assets/gravity-refs.bib
index 60d5a53..cbbf4cc 100644
--- a/doc/source/_assets/gravity-refs.bib
+++ b/doc/source/_assets/gravity-refs.bib
@@ -564,7 +564,6 @@ @book{Munk:1960uk
 year = {1960},
 isbn = {9780521104067},
 url = {http://www.cambridge.org/9780521104067},
-doi = {10.1017/CB9780521104067},
 publisher = {Cambridge University Press},
 address = {New York}
 }
diff --git a/doc/source/getting_started/Getting-Started.rst b/doc/source/getting_started/Getting-Started.rst
index 0f2e213..6fca0c8 100644
--- a/doc/source/getting_started/Getting-Started.rst
+++ b/doc/source/getting_started/Getting-Started.rst
@@ -2,7 +2,7 @@
 Getting Started
 ===============
 
-- `Register at NASA Earthdata <./NASA-Earthdata.rst>`_
+- `Register at NASA Earthdata <./NASA-Earthdata.html>`_
 - Run `podaac_cumulus.py <https://github.com/tsutterley/gravity-toolkit/blob/main/scripts/podaac_cumulus.py>`_ program with your NASA Earthdata credentials to acquire GRACE/GRACE-FO and auxiliary data
 
 .. code-block:: bash
diff --git a/scripts/podaac_cumulus.py b/scripts/podaac_cumulus.py
index 8942606..71a8590 100644
--- a/scripts/podaac_cumulus.py
+++ b/scripts/podaac_cumulus.py
@@ -421,7 +421,7 @@ def arguments():
         help='Sync GRACE/GRACE-FO Level-1B dealiasing products')
     # CMR endpoint type
     parser.add_argument('--endpoint','-e',
-        type=str, default='s3', choices=['s3','data'],
+        type=str, default='data', choices=['s3','data'],
         help='CMR url endpoint type')
     # connection timeout
     parser.add_argument('--timeout','-t',