diff --git a/rattail_fabric/certbot.py b/rattail_fabric/certbot.py
index 0c1d26a..fdf14dd 100644
--- a/rattail_fabric/certbot.py
+++ b/rattail_fabric/certbot.py
@@ -32,7 +32,7 @@ from fabric.contrib.files import exists
 from rattail_fabric import apt, get_debian_version
 
 
-def install(source=False):
+def install(source=False, service='apache'):
     """
     Install the Let's Encrypt certbot utility
     """
@@ -59,7 +59,12 @@ def install(source=False):
 
         # debian 9 stretch, or later
         elif version >= 9:
-            apt.install('python-certbot-apache')
+            if service == 'apache':
+                apt.install('python-certbot-apache')
+            elif service == 'nginx':
+                apt.install('python-certbot-nginx')
+            else:
+                raise NotImplementedError("unknown web service: {}".format(service))
 
         # other..? will have to investigate when this comes up
         else: