diff --git a/submodules/PPFI-IM b/submodules/PPFI-IM
index a647dff..6ef313f 160000
--- a/submodules/PPFI-IM
+++ b/submodules/PPFI-IM
@@ -1 +1 @@
-Subproject commit a647dffe58510a0ddd8bbb6ffc57cfbc65a90769
+Subproject commit 6ef313fe29c53137dea4a8d66685de34df18451a