diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index e9e40fc468..3efa3caeb5 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -30,7 +30,7 @@ jobs:
       max_enqueued: "20000000"
       is_london_fork_active: true
       is_bridge_active: false
-      gossip_msg_size: "33554432"
+      gossip_msg_size: "16777216"
       notification: false
     secrets:
       AWS_ROLE_ARN: ${{ secrets.AWS_ROLE_ARN }}
@@ -168,7 +168,7 @@ jobs:
       max_enqueued: "20000000"
       is_london_fork_active: true
       is_bridge_active: false
-      gossip_msg_size: "33554432"
+      gossip_msg_size: "16777216"
       logs: true
       build_blade_output: ${{ needs.ci.outputs.build_blade }}
       lint_output: ${{ needs.ci.outputs.lint }}