diff --git a/lib/pkp b/lib/pkp
index d86c2396e8..d11f57421d 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit d86c2396e893e53aae027ffaa7969ceaf1ff37d5
+Subproject commit d11f57421d2cefb9ce46c74ca5676671fa3dc1e8