diff --git a/lib/pkp b/lib/pkp
index 79daa4200a7..af1cc54e0fb 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 79daa4200a7d8e49ddc9060bb74d771b07b9d580
+Subproject commit af1cc54e0fb2e3dd7f8421e3cd3acc4aede4effb