diff --git a/brainreg_napari/__init__.py b/brainreg_napari/__init__.py
index e69de29..d9d51ad 100644
--- a/brainreg_napari/__init__.py
+++ b/brainreg_napari/__init__.py
@@ -0,0 +1,6 @@
+import warnings
+
+warnings.warn(
+    "brainreg-napari is deprecated, please switch to brainreg[napari].",
+    DeprecationWarning,
+)