diff --git a/requirements.txt b/requirements.txt
index e98d3bb..5917bf7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -57,7 +57,7 @@ networkx==2.2
 nose==1.3.7
 notebook==5.7.4
 numpy==1.14.5
-opencv-python==3.4.5.20
+opencv-python==3.4.7.28
 packaging==18.0
 pandas==0.23.4
 pandocfilters==1.4.2
diff --git a/requirements_gpu.txt b/requirements_gpu.txt
index 604ac3f..dddcaf5 100644
--- a/requirements_gpu.txt
+++ b/requirements_gpu.txt
@@ -57,7 +57,7 @@ networkx==2.2
 nose==1.3.7
 notebook==5.7.4
 numpy==1.14.5
-opencv-python==3.4.5.20
+opencv-python==3.4.7.28
 packaging==18.0
 pandas==0.23.4
 pandocfilters==1.4.2