Update requirements.txt

requirements.txt

@@ -1,11 +1,16 @@
-gradio>=4.44.0
-demucs>=4.0.1
-librosa>=0.10.1
+--extra-index-url https://download.pytorch.org/whl/cpu
+
+gradio==4.44.0
+demucs==4.0.1
+
+# PyTorch CPU (match versions)
+torch==2.2.2+cpu
+torchaudio==2.2.2+cpu
+
+# Audio stack (pin around known compatibility)
+librosa==0.10.1
+numba>=0.58,<0.60
+numpy<2.0
 soundfile>=0.12.1
-numpy>=1.24.0
-matplotlib>=3.8.0
-# Demucs / librosa deps
-torch>=2.2.0
-torchaudio>=2.2.0
-numba>=0.58.0
 tqdm>=4.66.0
+matplotlib>=3.8.0