diff --git a/.changes/v1.15/ENHANCEMENTS-20260226-102105.yaml b/.changes/v1.15/ENHANCEMENTS-20260226-102105.yaml
new file mode 100644
index 0000000000..93936a0662
--- /dev/null
+++ b/.changes/v1.15/ENHANCEMENTS-20260226-102105.yaml
@@ -0,0 +1,5 @@
+kind: ENHANCEMENTS
+body: 'backend/s3: Improved performance when using workspaces by replacing workspace listing with a direct state file check'
+time: 2026-02-26T10:21:05.578904Z
+custom:
+    Issue: "33137"