diff --git a/lib/pkp b/lib/pkp
index cd7ceba4cc8..55cdcd9b9d3 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit cd7ceba4cc8e53e657c072c901d0b9407b36b18c
+Subproject commit 55cdcd9b9d35818960e838206297e7f0ec1b1216