diff --git a/README.md b/README.md
index 8012f40..c36f07e 100644
--- a/README.md
+++ b/README.md
@@ -80,12 +80,18 @@ Todo
 In the project root directory:
 
 ```
+bundle exec puma
+
+# or if you did not use bundler to install puma...
 puma
 ```
 
 This default to development mode.  Run it in production mode with:
 
 ```
+RACK_ENV=production bundle exec puma
+
+# or if you did not install puma
 RACK_ENV=production puma
 ```
 
@@ -93,7 +99,7 @@ For development, just run it like that.  For production, probably want to set up
 
 ### Run it with systemd in production
 
-Copy the example myapp.service file to `/etc/systemd/system/` and edit accordingly.  The example assumes a user named "myapp" with a group name "myapp", the application files are in `/opt/myapp/`, and puma is the system puma.
+Copy the example myapp.service file to `/etc/systemd/system/` and edit accordingly.  The example assumes a user named "myapp" with a group name "myapp", the application files are in `/opt/myapp/`, and puma is the system puma.  If you installed puma with bundler, the exe will be at `/opt/myapp/vendor/bundle/ruby/3.1.0/bin/puma`.
 
 ### Notes