diff --git a/lib/pkp b/lib/pkp
index 86be4dd35e..55af2f4b33 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 86be4dd35ecccdff12e6279663515a77c7936378
+Subproject commit 55af2f4b334e684b0e315dbfb135cbdc396c8094