diff --git a/submodules/PPFI-IM b/submodules/PPFI-IM
index 6c4e02d..1f1aa0c 160000
--- a/submodules/PPFI-IM
+++ b/submodules/PPFI-IM
@@ -1 +1 @@
-Subproject commit 6c4e02d4b9301eb52727d2484dfecad54d9f308e
+Subproject commit 1f1aa0cf26d7a8e28ed523d91798867a513f5733