diff --git a/robustness-master/ImageNet-C/imagenet_c/requirements.txt b/robustness-master/ImageNet-C/imagenet_c/requirements.txt
index 6e464cf..48a5535 100644
--- a/robustness-master/ImageNet-C/imagenet_c/requirements.txt
+++ b/robustness-master/ImageNet-C/imagenet_c/requirements.txt
@@ -2,5 +2,5 @@ numpy==1.14.0
 Pillow==5.0.0
 scikit-image==0.13.1
 Wand==0.4.4
-opencv-python==3.4.2.16
+opencv-python==4.2.0.32
 scipy==1.0.0
diff --git a/robustness-master/ImageNet-C/imagenet_c/setup.py b/robustness-master/ImageNet-C/imagenet_c/setup.py
index bc8198a..fa90c98 100644
--- a/robustness-master/ImageNet-C/imagenet_c/setup.py
+++ b/robustness-master/ImageNet-C/imagenet_c/setup.py
@@ -22,7 +22,7 @@
     },
     install_requires=[
         'wand ~= 0.4',
-        'opencv-python ~= 3.4',
+        'opencv-python >= 3.4,< 5.0',
     ],
     #include_package_data=True,
     classifiers=[