diff --git a/.changeset/nice-pandas-knock.md b/.changeset/nice-pandas-knock.md
new file mode 100644
index 0000000000..3c3fd9ccd7
--- /dev/null
+++ b/.changeset/nice-pandas-knock.md
@@ -0,0 +1,8 @@
+---
+"@latticexyz/cli": patch
+"@latticexyz/common": patch
+"@latticexyz/store": patch
+"@latticexyz/world": patch
+---
+
+Clean up Memory.sol, make mcopy pure