diff --git a/lib/pkp b/lib/pkp
index 52bad9a443c..3ef1876a2ff 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 52bad9a443c926fe1ec4b02a4f6a3169dab30816
+Subproject commit 3ef1876a2ff3bba979037667b5ef54f3d73e13f7