diff --git a/requirements.txt b/requirements.txt
index df13fca..f577284 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ pyscf>=2.14.0
 
 # HPC / parallel
 mpi4py>=4.1.2
-numpy>=1.24
+numpy>=2.5.1
 scipy>=1.18.0
 
 # Optional: GPU acceleration (requires CUDA 12.2)