diff --git a/requirements.txt b/requirements.txt
index be63ec5..8c161d8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -37,7 +37,7 @@ nbconvert==5.4.0
 nbformat==4.4.0
 notebook==6.1.5
 numba==0.35.0
-numpy==1.11.3
+numpy==1.21.0
 olefile==0.46
 opencv-python==3.4.3.18
 pandocfilters==1.4.2