diff --git a/Makefile b/Makefile
index 2c6f56e..4a05f07 100644
--- a/Makefile
+++ b/Makefile
@@ -69,6 +69,7 @@ codespell: deps-dev
 
 test: tests/assets deps-dev
 	$(PYTHON) -m xmlrunner discover -v -s tests --output-file $(CURDIR)/unittest.xml
+	OCRD_METS_CACHING=true $(PYTHON) -m xmlrunner discover -v -s tests --output-file $(CURDIR)/unittest.xml
 
 ci: flake8 mypy test codespell
 
diff --git a/ocrd_browser/model/document.py b/ocrd_browser/model/document.py
index 1e0d2d2..534fd4e 100644
--- a/ocrd_browser/model/document.py
+++ b/ocrd_browser/model/document.py
@@ -354,6 +354,7 @@ def reorder(self, ordered_page_ids: List[str]) -> None:
             page_sequence.append(div)
 
         old_to_new = dict(zip(old_page_ids, self.page_ids))
+        self.workspace.mets.refresh_caches()
         self.save_mets()
         self._emit('document_changed', 'reordered', old_to_new)
 
diff --git a/requirements.txt b/requirements.txt
index f76c053..f7ad882 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-ocrd
+ocrd >= 2.43.0
 Pillow
 numpy >= 1.20
 opencv-python-headless