diff --git a/lib/kamal/commands/app.rb b/lib/kamal/commands/app.rb
index e25efd20..5f0744cc 100644
--- a/lib/kamal/commands/app.rb
+++ b/lib/kamal/commands/app.rb
@@ -234,6 +234,6 @@ class Kamal::Commands::App < Kamal::Commands::Base
     end
 
     def copy_contents(source, destination, continue_on_error: false)
-      [ :cp, "-rn", "#{source}/*", destination, *("|| true" if continue_on_error)]
+      [ :cp, "-rnT", "#{source}", destination, *("|| true" if continue_on_error)]
     end
 end
diff --git a/test/cli/app_test.rb b/test/cli/app_test.rb
index 0ce7b32f..ba58d607 100644
--- a/test/cli/app_test.rb
+++ b/test/cli/app_test.rb
@@ -84,7 +84,7 @@ class CliAppTest < CliTestCase
 
     run_command("boot", config: :with_assets).tap do |output|
       assert_match "docker tag dhh/app:latest dhh/app:latest", output
-      assert_match "/usr/bin/env mkdir -p .kamal/assets/volumes/app-web-latest ; cp -rn .kamal/assets/extracted/app-web-latest/* .kamal/assets/volumes/app-web-latest ; cp -rn .kamal/assets/extracted/app-web-latest/* .kamal/assets/volumes/app-web-123 || true ; cp -rn .kamal/assets/extracted/app-web-123/* .kamal/assets/volumes/app-web-latest || true", output
+      assert_match "/usr/bin/env mkdir -p .kamal/assets/volumes/app-web-latest ; cp -rnT .kamal/assets/extracted/app-web-latest .kamal/assets/volumes/app-web-latest ; cp -rnT .kamal/assets/extracted/app-web-latest .kamal/assets/volumes/app-web-123 || true ; cp -rnT .kamal/assets/extracted/app-web-123 .kamal/assets/volumes/app-web-latest || true", output
       assert_match "/usr/bin/env mkdir -p .kamal/assets/extracted/app-web-latest && docker stop -t 1 app-web-assets 2> /dev/null || true && docker run --name app-web-assets --detach --rm dhh/app:latest sleep 1000000 && docker cp -L app-web-assets:/public/assets/. .kamal/assets/extracted/app-web-latest && docker stop -t 1 app-web-assets", output
       assert_match /docker run --detach --restart unless-stopped --name app-web-latest --hostname 1.1.1.1-[0-9a-f]{12} /, output
       assert_match "docker container ls --all --filter name=^app-web-123$ --quiet | xargs docker stop", output
diff --git a/test/commands/app_test.rb b/test/commands/app_test.rb
index ce2bf4c6..278dcaa1 100644
--- a/test/commands/app_test.rb
+++ b/test/commands/app_test.rb
@@ -358,14 +358,14 @@ class CommandsAppTest < ActiveSupport::TestCase
   test "sync asset volumes" do
     assert_equal [
       :mkdir, "-p", ".kamal/assets/volumes/app-web-999", ";",
-      :cp, "-rn", ".kamal/assets/extracted/app-web-999/*", ".kamal/assets/volumes/app-web-999"
+      :cp, "-rnT", ".kamal/assets/extracted/app-web-999", ".kamal/assets/volumes/app-web-999"
     ], new_command(asset_path: "/public/assets").sync_asset_volumes
 
     assert_equal [
       :mkdir, "-p", ".kamal/assets/volumes/app-web-999", ";",
-      :cp, "-rn", ".kamal/assets/extracted/app-web-999/*", ".kamal/assets/volumes/app-web-999", ";",
-      :cp, "-rn", ".kamal/assets/extracted/app-web-999/*", ".kamal/assets/volumes/app-web-998", "|| true", ";",
-      :cp, "-rn", ".kamal/assets/extracted/app-web-998/*", ".kamal/assets/volumes/app-web-999", "|| true",
+      :cp, "-rnT", ".kamal/assets/extracted/app-web-999", ".kamal/assets/volumes/app-web-999", ";",
+      :cp, "-rnT", ".kamal/assets/extracted/app-web-999", ".kamal/assets/volumes/app-web-998", "|| true", ";",
+      :cp, "-rnT", ".kamal/assets/extracted/app-web-998", ".kamal/assets/volumes/app-web-999", "|| true",
     ], new_command(asset_path: "/public/assets").sync_asset_volumes(old_version: 998)
   end