diff --git a/.changeset/calm-drinks-dance.md b/.changeset/calm-drinks-dance.md
new file mode 100644
index 0000000000..0a893bb917
--- /dev/null
+++ b/.changeset/calm-drinks-dance.md
@@ -0,0 +1,6 @@
+---
+"@latticexyz/cli": patch
+"@latticexyz/world": patch
+---
+
+Attempting to deploy multiple systems where there are overlapping system IDs now throws an error.