diff --git a/.changeset/grumpy-birds-teach.md b/.changeset/grumpy-birds-teach.md
new file mode 100644
index 0000000000..5989250c19
--- /dev/null
+++ b/.changeset/grumpy-birds-teach.md
@@ -0,0 +1,5 @@
+---
+'@backstage/theme': patch
+---
+
+add square shape + improve typescript types