diff --git a/panel/src/panel/views.py b/panel/src/panel/views.py
index 68749fe3..b799cc88 100644
--- a/panel/src/panel/views.py
+++ b/panel/src/panel/views.py
@@ -161,6 +161,7 @@ class DeploymentStatus(ConfigurationForm):
             f"-state={cwd}/terraform.tfstate", # FIXME: separate users' state
             "--auto-approve",
             "-lock=false",
+            "-parallelism=1" # limit OOM risk
         ]
         deployment_result = subprocess.run(cmd, cwd=cwd, env=env)
         logger.debug("deployment_result: %s", deployment_result)