diff --git a/pool/cache.go b/pool/cache.go
index b051e5f..a50da22 100644
--- a/pool/cache.go
+++ b/pool/cache.go
@@ -67,5 +67,6 @@ func (c *sessionCache) updateEpoch(newEpoch uint64) {
 
 func (c *sessionCache) expired(val *cacheValue) bool {
 	epoch := atomic.LoadUint64(&c.currentEpoch)
-	return val.token.ExpiredAt(epoch)
+	// use epoch+1 (clear cache beforehand) to prevent 'expired session token' error right after epoch tick
+	return val.token.ExpiredAt(epoch + 1)
 }