diff --git a/packages/validator/src/util/clock.ts b/packages/validator/src/util/clock.ts
index 837fb82809bd..ca29eacd41c2 100644
--- a/packages/validator/src/util/clock.ts
+++ b/packages/validator/src/util/clock.ts
@@ -138,7 +138,7 @@ export class Clock implements IClock {
  */
 export function getCurrentSlotAround(config: ChainForkConfig, genesisTime: TimeSeconds): Slot {
   const diffInSeconds = Date.now() / 1000 - genesisTime;
-  const slotsSinceGenesis = Math.floor(diffInSeconds / config.SECONDS_PER_SLOT);
+  const slotsSinceGenesis = Math.round(diffInSeconds / config.SECONDS_PER_SLOT);
   return GENESIS_SLOT + slotsSinceGenesis;
 }