--- a/security/manager/ssl/StaticHPKPins.h
+++ b/security/manager/ssl/StaticHPKPins.h
@@ -1152,9 +1152,9 @@ static const TransportSecurityPreload kP
   { "za.search.yahoo.com", false, true, false, -1, &kPinset_yahoo },
   { "zh.search.yahoo.com", false, true, false, -1, &kPinset_yahoo },
 };
 
 // Pinning Preload List Length = 477;
 
 static const int32_t kUnknownId = -1;
 
-static const PRTime kPreloadPKPinsExpirationTime = INT64_C(1497627750296000);
+static const PRTime kPreloadPKPinsExpirationTime = INT64_C(1497715199083000);