diff --git a/app/telemetry.py b/app/telemetry.py
index 386362d..da57b76 100644
--- a/app/telemetry.py
+++ b/app/telemetry.py
@@ -36,17 +36,17 @@ def setup_telemetry(app: FastAPI) -> None:
     """
     logger.info("🔧 Setting up telemetry...")
 
-    # Add startup event for telemetry initialization
-    @app.on_event("startup")
+    # Use router events instead of deprecated on_event
     async def startup_telemetry():
         logger.info("📊 Telemetry initialized successfully")
         logger.info(f"📍 Application: {app.title} v{app.version}")
 
-    # Add shutdown event for cleanup
-    @app.on_event("shutdown")
     async def shutdown_telemetry():
         logger.info("📊 Telemetry shutdown complete")
 
+    app.router.on_startup.append(startup_telemetry)
+    app.router.on_shutdown.append(shutdown_telemetry)
+
     logger.info("✅ Telemetry setup complete")
 
 
diff --git a/pyproject.toml b/pyproject.toml
index a633bce..04e72a4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,3 +8,8 @@ known_third_party = ["fastapi", "pydantic", "starlette"]
 combine_as_imports = true
 force_sort_within_sections = true
 lines_after_imports = 2
+
+
+[tool.black]
+line-length = 88
+target-version = ["py312"]
diff --git a/requirements.txt b/requirements.txt
index 38226e9..542a43d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ jinja2==3.1.6
 requests==2.32.4
 httpx==0.27.0
 
-pytest==8.2.0
+pytest==8.4.2
 pytest-asyncio==0.23.6
 pytest-cov==5.0.0