diff --git a/.changeset/tall-timers-lie.md b/.changeset/tall-timers-lie.md
new file mode 100644
index 000000000..be23450b4
--- /dev/null
+++ b/.changeset/tall-timers-lie.md
@@ -0,0 +1,5 @@
+---
+"@tma.js/sdk": patch
+---
+
+Fix invalid launch params serialization