diff --git a/backend/requirements-lite.txt b/backend/requirements-lite.txt
index 1fde126..ba7e430 100644
--- a/backend/requirements-lite.txt
+++ b/backend/requirements-lite.txt
@@ -42,7 +42,7 @@ numpy>=1.25.2
 # Use --extra-index-url so PyPI remains available for all other packages.
 # --index-url would replace PyPI entirely, breaking pyannote.audio and other deps.
 --extra-index-url https://download.pytorch.org/whl/cpu
-torch==2.8.0+cpu
+torch==2.11.0+cu128
 
 # PyAnnote (CPU-only, for speaker embedding extraction and cross-file speaker matching)
 pyannote.audio>=3.3.2
diff --git a/backend/requirements.txt b/backend/requirements.txt
index 7440d40..47c3feb 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -40,7 +40,7 @@ numpy>=2.1.0
 
 # PyTorch with CUDA 12.8 support (CVE-2025-32434 fixed in 2.6.0+)
 --extra-index-url https://download.pytorch.org/whl/cu128
-torch==2.8.0
+torch==2.11.0+cu128
 torchaudio==2.8.0
 
 # =============================================================================