diff --git a/SGL.py b/SGL.py
index 2817858..e53c9d3 100644
--- a/SGL.py
+++ b/SGL.py
@@ -1,6 +1,5 @@
 import math
 import time
-import cvxpy as cp
 import numpy as np
 from utils import Laplacian_dual, Laplacian_inv, Laplacian