diff --git a/ares/dataset/cifar10.py b/ares/dataset/cifar10.py
index 81ec1ae0..3db2f72f 100644
--- a/ares/dataset/cifar10.py
+++ b/ares/dataset/cifar10.py
@@ -7,6 +7,9 @@
 
 from ares.utils import get_res_path
 
+import ssl
+ssl._create_default_https_context = ssl._create_unverified_context
+
 PATH_TARGET = get_res_path('cifar10/target.npy')
 
 
diff --git a/ares/dataset/imagenet.py b/ares/dataset/imagenet.py
index 2f46bbe6..57844a21 100644
--- a/ares/dataset/imagenet.py
+++ b/ares/dataset/imagenet.py
@@ -7,6 +7,9 @@
 
 from ares.utils import get_res_path, download_res
 
+import ssl
+ssl._create_default_https_context = ssl._create_unverified_context
+
 PATH_IMGS = get_res_path('./imagenet/ILSVRC2012_img_val')
 PATH_VAL_TXT = get_res_path('./imagenet/val.txt')
 PATH_TARGET_TXT = get_res_path('./imagenet/target.txt')