diff --git a/lib/pkp b/lib/pkp
index c6b28a1f626..976368bfafc 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit c6b28a1f626d0dd258957fbbac61a313088c5c01
+Subproject commit 976368bfafc964b7980b3f194ff1c3d7ca74d3b2