diff --git a/backend/requirements-runtime.txt b/backend/requirements-runtime.txt
index fed40ed..e8a9074 100644
--- a/backend/requirements-runtime.txt
+++ b/backend/requirements-runtime.txt
@@ -6,7 +6,7 @@ opencv-python-headless>=4.8.1.78
 numpy>=2.5.1
 # Audio-event detection (YAMNet laughter/reaction channel) runs on ONNX Runtime —
 # no torch/TF, so it stays on the hermetic native path.
-onnxruntime>=1.27.0
+onnxruntime>=1.28.0
 Pillow>=10.0.0
 questionary>=2.1.1
 python-dotenv>=1.2.2
diff --git a/backend/requirements.txt b/backend/requirements.txt
index ba25daf..160e7de 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -13,7 +13,7 @@ opencv-python-headless>=4.8.1.78
 numpy>=2.5.1
 
 # Audio-event detection (laughter/reaction channel via YAMNet ONNX — no torch/TF)
-onnxruntime>=1.27.0
+onnxruntime>=1.28.0
 
 # Thumbnails
 Pillow>=10.0.0