diff --git a/plugins/ihtsyn b/plugins/ihtsyn
index b1d5abe..31c4229 160000
--- a/plugins/ihtsyn
+++ b/plugins/ihtsyn
@@ -1 +1 @@
-Subproject commit b1d5abe2337d41ac7b1cf5005b9f580e2f8b3230
+Subproject commit 31c4229eb328f6aaa4024f76c595b55213cdf1cf