diff --git a/packages/cli/test/utils/crucible/utils/index.ts b/packages/cli/test/utils/crucible/utils/index.ts
index 11e69355dda3..73faa549fc9f 100644
--- a/packages/cli/test/utils/crucible/utils/index.ts
+++ b/packages/cli/test/utils/crucible/utils/index.ts
@@ -62,7 +62,7 @@ export function defineSimTestConfig(
       secondsPerSlot: SIM_TESTS_SECONDS_PER_SLOT,
       runTill: opts.runTillEpoch,
       // After adding Nethermind its took longer to complete
-      graceExtraTimeFraction: 0.5,
+      graceExtraTimeFraction: 0.8,
     }) * 1000;
 
   const ttd = getEstimatedTTD({