diff --git a/lib/importmap/commands.rb b/lib/importmap/commands.rb
index 350cc42..fc59e72 100644
--- a/lib/importmap/commands.rb
+++ b/lib/importmap/commands.rb
@@ -92,7 +92,7 @@ def outdated
   desc "update", "Update outdated package pins"
   def update
     if (outdated_packages = npm.outdated_packages).any?
-      pin outdated_packages.map(&:name)
+      pin(*outdated_packages.map(&:name))
     else
       puts "No outdated packages found"
     end
diff --git a/test/commands_test.rb b/test/commands_test.rb
index 8a3155a..1efd210 100644
--- a/test/commands_test.rb
+++ b/test/commands_test.rb
@@ -20,6 +20,22 @@ class CommandsTest < ActiveSupport::TestCase
     assert_includes JSON.parse(out), "imports"
   end
 
+  test "update command prints message of no outdated packages" do
+    out, _err = run_importmap_command("update")
+    assert_includes out, "No outdated"
+  end
+
+  test "update command prints confirmation of pin with outdated packages" do
+    @tmpdir = Dir.mktmpdir
+    FileUtils.cp_r("#{__dir__}/dummy", @tmpdir)
+    Dir.chdir("#{@tmpdir}/dummy")
+    FileUtils.cp("#{__dir__}/fixtures/files/outdated_import_map.rb", "#{@tmpdir}/dummy/config/importmap.rb")
+    FileUtils.cp("#{__dir__}/../lib/install/bin/importmap", "bin")
+
+    out, _err = run_importmap_command("update")
+    assert_includes out, "Pinning"
+  end
+
   private
     def run_importmap_command(command, *args)
       capture_subprocess_io { system("bin/importmap", command, *args, exception: true) }