diff --git a/config.json b/config.json
index 2f9d751..57f41db 100644
--- a/config.json
+++ b/config.json
@@ -26,7 +26,8 @@
         "capabilities": [
             "CAP_NET_ADMIN",
             "CAP_SYS_ADMIN",
-            "CAP_SYS_PTRACE"
+            "CAP_SYS_PTRACE",
+            "CAP_SYS_RESOURCE"
         ]
     }
 }
diff --git a/net-dhcp/__main__.py b/net-dhcp/__main__.py
index afda870..4143d92 100644
--- a/net-dhcp/__main__.py
+++ b/net-dhcp/__main__.py
@@ -1,5 +1,6 @@
 import logging
 import socketserver
+import resource
 from werkzeug.serving import run_simple
 from . import app
 
@@ -10,5 +11,7 @@ logger = logging.getLogger('net-dhcp')
 logger.setLevel(logging.DEBUG)
 logger.addHandler(fh)
 
+resource.setrlimit(resource.RLIMIT_NOFILE, (1048576, 1048576))
+
 socketserver.TCPServer.allow_reuse_address = True
 run_simple('unix:///run/docker/plugins/net-dhcp.sock', 0, app)