diff --git a/lib/pkp b/lib/pkp
index e7e0e6bf3c..ec931b7bed 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit e7e0e6bf3c60b949c545e1b97371f52f1681323c
+Subproject commit ec931b7bedf15dc465df8fc94d20fb9f3a316029