diff --git a/.changeset/pretty-files-visit.md b/.changeset/pretty-files-visit.md
new file mode 100644
index 0000000..8438d5a
--- /dev/null
+++ b/.changeset/pretty-files-visit.md
@@ -0,0 +1,5 @@
+---
+"deepsignal": major
+---
+
+Remove support for class instances and everything that is not strictly plain objects or arrays.