diff --git a/lib/pkp b/lib/pkp
index 0194be3b0b..15ed6cbd38 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 0194be3b0bfa2425d5283bfb03e0e9f650d10f76
+Subproject commit 15ed6cbd388914c2e93954a833ce2e00c2ae8eff