diff --git a/setup.py b/setup.py
index 3e2bffb..40f9622 100755
--- a/setup.py
+++ b/setup.py
@@ -51,7 +51,7 @@ def get_long_description() -> str:
     author="The Open Microscopy Team",
     author_email="",
     python_requires=">=3",
-    install_requires=["omero-py>=5.6.0", "ome-zarr>=0.5.0"],
+    install_requires=["omero-py>=5.6.0", "ome-zarr>=0.5.0,<0.12.0"],
     long_description=long_description,
     keywords=["OMERO.CLI", "plugin"],
     url="https://github.com/ome/omero-cli-zarr/",