diff --git a/src/shared/shared.go b/src/shared/shared.go
index 717a5ce2a9afc2d2e0852964011f2e7fee50bb9d..169f0874b2f489cc4c8be7f0a40c9f8b11257fe7 100644
--- a/src/shared/shared.go
+++ b/src/shared/shared.go
@@ -44,8 +44,8 @@ const NumFileReplicas = 4
 // How long to wait to get the membership list from the introducer
 const IntroducerTimeout = 3 * time.Second
 const GrepTimeout = 5 * time.Second
-const ACKTimeout = 1500 * time.Millisecond
-const PingInterval = 3000 * time.Millisecond
+const ACKTimeout = 5000 * time.Millisecond
+const PingInterval = 7000 * time.Millisecond
 
 // Simulate false positives by dropping packets before they are sent out
 const FalsePosChance = 0.0