diff --git a/apps/drone/live-runner.hcl b/apps/drone/live-runner.hcl
index 90e04b5..0a06588 100644
--- a/apps/drone/live-runner.hcl
+++ b/apps/drone/live-runner.hcl
@@ -45,6 +45,7 @@ job "drone-runner" {
         DRONE_RPC_SECRET          = "7eb685ed81d0c34bafc5efa7783c20b2"
         DRONE_RPC_HOST            = "drone.service.nr5"
         DRONE_RPC_PROTO           = "http"
+        DRONE_RUNNER_CAPACITY     = 1
         DRONE_LOGS_DEBUG          = true
         DRONE_LOGS_TRACE          = true
       }