diff --git a/external/tsschecker b/external/tsschecker
index 84fb9cbc..664e3485 160000
--- a/external/tsschecker
+++ b/external/tsschecker
@@ -1 +1 @@
-Subproject commit 84fb9cbc50929e7011f2b532289ac8add022a28c
+Subproject commit 664e3485092680961aca015dd97f2f7036cd9c1f