diff --git a/scripts/antithesis/launch.sh b/scripts/antithesis/launch.sh
index 2f95c3975..83ec5caf6 100755
--- a/scripts/antithesis/launch.sh
+++ b/scripts/antithesis/launch.sh
@@ -3,7 +3,7 @@
 curl --fail -u "$ANTITHESIS_USER:$ANTITHESIS_PASSWD" \
   -X POST https://$ANTITHESIS_TENANT.antithesis.com/api/v1/launch/limbo \
   -d "{\"params\": { \"antithesis.description\":\"basic_test on main\",
-      \"custom.duration\":\"8\",
+      \"custom.duration\":\"4\",
       \"antithesis.config_image\":\"$ANTITHESIS_DOCKER_REPO/limbo-config:antithesis-latest\",
       \"antithesis.images\":\"$ANTITHESIS_DOCKER_REPO/limbo-workload:antithesis-latest\",
       \"antithesis.report.recipients\":\"$ANTITHESIS_EMAIL\"