diff --git a/app/models/api_key.rb b/app/models/api_key.rb
index 7eda901..fd8142a 100644
--- a/app/models/api_key.rb
+++ b/app/models/api_key.rb
@@ -1,4 +1,6 @@
 class ApiKey < ApplicationRecord
+  include NtfyDispatchable
+
   # Normalize permissions to always be a Hash
   attribute :permissions, :jsonb, default: {}
 
@@ -56,6 +58,12 @@ class ApiKey < ApplicationRecord
   # Revoke API key
   def revoke!
     update!(active: false)
+
+    self.class.dispatch_ntfy("api_key_revoked",
+      title: "API key revoked",
+      message: "API key '#{name}' (#{key_prefix}...) was revoked",
+      priority: 3,
+      tags: ["key", "no_entry"])
   end
 
   # Deactivate expired keys
diff --git a/test/models/api_key_test.rb b/test/models/api_key_test.rb
new file mode 100644
index 0000000..7adf114
--- /dev/null
+++ b/test/models/api_key_test.rb
@@ -0,0 +1,31 @@
+require "test_helper"
+
+class ApiKeyTest < ActiveSupport::TestCase
+  include ActiveJob::TestHelper
+
+  setup do
+    ActiveJob::Base.queue_adapter = :test
+    @admin = AdminUser.create!(
+      name: "Key Admin", email: "key@example.com",
+      password: "password123",
+      ntfy_topic: "key-topic", ntfy_token: "tk_key",
+      ntfy_enabled: true, ntfy_server_url: "https://ntfy.example.com"
+    )
+    stub_request(:post, "https://ntfy.example.com/key-topic").to_return(status: 200)
+  end
+
+  test "revoke! dispatches api_key_revoked notification" do
+    api_key = ApiKey.create!(
+      name: "Test Key",
+      key_digest: "e" * 64,
+      key_prefix: "api_live_ab",
+      permissions: {}, active: true
+    )
+
+    assert_enqueued_jobs 1 do
+      api_key.revoke!
+    end
+
+    assert_not api_key.reload.active
+  end
+end