diff --git a/build/azure-pipeline/workflow-pr.yml b/build/azure-pipeline/workflow-pr.yml
index 6c243e7..e15c0ec 100644
--- a/build/azure-pipeline/workflow-pr.yml
+++ b/build/azure-pipeline/workflow-pr.yml
@@ -17,6 +17,8 @@ pr:
       - divoom/Cargo.toml
       - divoom_cli/src
       - divoom_cli/Cargo.toml
+      - divoom_gateway/src
+      - divoom_gateway/Cargo.toml
 
 #
 # Version and jobs
diff --git a/divoom_gateway/src/server/api_server.rs b/divoom_gateway/src/server/api_server.rs
index dbb55d7..eb1a310 100644
--- a/divoom_gateway/src/server/api_server.rs
+++ b/divoom_gateway/src/server/api_server.rs
@@ -1,6 +1,6 @@
 use super::api_handler::*;
 use divoom::DivoomAnimationTemplateManager;
-use poem::{listener::TcpListener, Route};
+use poem::{listener::TcpListener, Route, handler};
 use poem_openapi::OpenApiService;
 use std::sync::Arc;
 
@@ -45,10 +45,16 @@ impl ApiServer {
         let app = Route::new()
             .nest("/api", api_service)
             .nest("/openapi.json", spec)
-            .nest("/", ui);
+            .nest("/", ui)
+            .at("/probe", poem::get(probe));
 
         let server_endpoint = format!("{}:{}", self.server_address, self.server_port);
         let server_listener = TcpListener::bind(server_endpoint);
         poem::Server::new(server_listener).run(app).await
     }
 }
+
+#[handler]
+fn probe() -> String {
+    "ok".to_string()
+}