diff --git a/requirements.txt b/requirements.txt
index 922f869..8162a41 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ nbconvert==5.1.1
 nbformat==4.3.0
 nltk==3.2.4
 notebook==5.0.0
-numpy==1.12.1
+numpy==1.21.0
 olefile==0.44
 packaging==16.8
 pandocfilters==1.4.1