diff --git a/lib/pkp b/lib/pkp
index 5718411c862..b23a6756679 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 5718411c862efa918ca909dc647f6d1c1ce98e0a
+Subproject commit b23a67566791fd4b84e93fa82aa040c5a65be75a