diff --git a/lib/pkp b/lib/pkp
index 55e89edc73..df67d23c94 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 55e89edc73fef202eb756b05cd0f7b0630b0a53e
+Subproject commit df67d23c94e078411a2ab4d1f2aadf4920ccd697