diff --git a/main.py b/main.py
index f312c68..0b00bb7 100644
--- a/main.py
+++ b/main.py
@@ -126,11 +126,13 @@ def main():
     # Launch the app
     logger.info("Launching application...")
     try:
+        # Gradio 6.x: show_api replaced with footer_links
+        footer = ["api", "gradio"] if settings.api_enabled else ["gradio"]
         app.launch(
             server_name=settings.host,
             server_port=settings.gradio_port,
             share=False,
-            show_api=settings.api_enabled,
+            footer_links=footer,
         )
     except KeyboardInterrupt:
         logger.info("Shutting down...")
diff --git a/src/ui/app.py b/src/ui/app.py
index c4ef2eb..449ac9f 100644
--- a/src/ui/app.py
+++ b/src/ui/app.py
@@ -190,10 +190,9 @@ class AudioCraftApp:
 
     def build(self) -> gr.Blocks:
         """Build the Gradio application."""
-        css = get_custom_css()
-
-        # Create Blocks - use minimal params for compatibility
-        with gr.Blocks(css=css) as app:
+        # In Gradio 6.x, theme/css moved to launch()
+        # Create Blocks with no styling params
+        with gr.Blocks() as app:
             # Header with VRAM monitor
             with gr.Row():
                 with gr.Column(scale=4):
@@ -307,11 +306,14 @@ class AudioCraftApp:
         if self.app is None:
             self.build()
 
+        # Gradio 6.x: theme/css go in launch()
+        css = get_custom_css()
+
         self.app.launch(
             server_name=server_name or self.settings.host,
             server_port=server_port or self.settings.gradio_port,
             share=share,
-            show_error=True,
+            css=css,
             **kwargs,
         )