diff --git a/.github/workflows/pages.yml b/.github/workflows/pages.yml
index 5a92dc4..a66d64b 100644
--- a/.github/workflows/pages.yml
+++ b/.github/workflows/pages.yml
@@ -24,7 +24,9 @@ jobs:
         with:
           python-version: 3.13
           cache: pip
-          cache-dependency-path: docs/requirements.txt
+          cache-dependency-path: |
+            requirements.txt
+            docs/requirements.txt
       - name: Install Dependencies
         working-directory: ./docs
         run: make installdeps
diff --git a/tests/test_toa5.py b/tests/test_toa5.py
index 2c1f6de..0d92bff 100644
--- a/tests/test_toa5.py
+++ b/tests/test_toa5.py
@@ -106,6 +106,11 @@ def test_bad_toa5(self):
                 with self.assertRaises(toa5.Toa5Error):
                     toa5.read_header(csv_rd)
 
+        dupe_cols = ( ('TOA5','sn','lm','ls','os','pn','ps','tn'),('Foo','Foo'),('',''),('','') )
+        with self.assertRaises(toa5.Toa5Error):
+            toa5.read_header(iter(dupe_cols))
+        toa5.read_header(iter(dupe_cols), allow_dupes=True)
+
     def test_col_trans(self):
         for tp in _exp_hdr.values():
             for ch, cn, sq in tp: