diff --git a/lib/pkp b/lib/pkp
index 1b7cd82a866..a97afefd053 160000
--- a/lib/pkp
+++ b/lib/pkp
@@ -1 +1 @@
-Subproject commit 1b7cd82a86695db5c5246127371001bdd5ea1ccf
+Subproject commit a97afefd05373975143bb551d11a78c1bbdfa26b