diff --git a/lib/install/Procfile.dev b/lib/install/Procfile.dev
index 59915d58..da151fee 100644
--- a/lib/install/Procfile.dev
+++ b/lib/install/Procfile.dev
@@ -1,2 +1,2 @@
-web: env RUBY_DEBUG_OPEN=true bin/rails server -p 3000
+web: bin/rails server
 css: bin/rails tailwindcss:watch
diff --git a/lib/install/dev b/lib/install/dev
index 74ade166..ad72c7d5 100755
--- a/lib/install/dev
+++ b/lib/install/dev
@@ -5,4 +5,12 @@ if ! gem list foreman -i --silent; then
   gem install foreman
 fi
 
+# Default to port 3000 if not specified
+export PORT="${PORT:-3000}"
+
+# Let the debug gem allow remote connections,
+# but avoid loading until `debugger` is called
+export RUBY_DEBUG_OPEN="true"
+export RUBY_DEBUG_LAZY="true"
+
 exec foreman start -f Procfile.dev "$@"