diff --git a/.github/workflows/pages_graphs.yml b/.github/workflows/pages_graphs.yml
index fc087ff..05ea492 100644
--- a/.github/workflows/pages_graphs.yml
+++ b/.github/workflows/pages_graphs.yml
@@ -1,7 +1,9 @@
 name: Pages and Graphviz re-render
 on: 
   push:
-    paths: 'docs/**/*'
+    branches:
+      - main
+    paths: 'docs/**'
 
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch: 
diff --git a/docs/index.md b/docs/index.md
index 92bf977..910ca63 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -18,3 +18,5 @@ Please see the associated Github repository which has [outline tasks in Issues](
 
 
 
+
+
diff --git a/src/cyto_ml/data/vectorstore.py b/src/cyto_ml/data/vectorstore.py
index 4805ff4..780ff92 100644
--- a/src/cyto_ml/data/vectorstore.py
+++ b/src/cyto_ml/data/vectorstore.py
@@ -6,7 +6,7 @@
 import chromadb.api.models.Collection
 import numpy as np
 from chromadb.config import Settings
-from chromadb.db.base import UniqueConstraintError
+from chromadb.errors import UniqueConstraintError
 
 logging.basicConfig(level=logging.INFO)
 # TODO make this sensibly configurable, not confusingly hardcoded