diff --git a/install-graylog.sh b/install-graylog.sh
index c30a016..4c4418d 100644
--- a/install-graylog.sh
+++ b/install-graylog.sh
@@ -219,9 +219,9 @@ wait_for_api_ready() {
   local waited=0
   while true; do
     gcurl GET /system/indices/index_sets | python3 -c "import json,sys;json.load(sys.stdin)" 2>/dev/null && break
-    waited=$((waited + 3))
-    [ "$waited" -ge 60 ] && die "Graylog REST API did not respond with valid JSON within 60s of the container reporting healthy."
-    sleep 3
+    waited=$((waited + 5))
+    [ "$waited" -ge 180 ] && die "Graylog REST API did not respond with valid JSON within 180s of the container reporting healthy."
+    sleep 5
   done
   ok "Graylog REST API is ready"
 }