diff --git a/lib/pkp b/lib/pkp
index 8b0943ff07..23b1ba3666 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 8b0943ff07aaa585173f8edcbe51215d96a46391
+Subproject commit 23b1ba3666f9b6e602ac205ca769d9d2a2789ec0