diff --git a/requirements.txt b/requirements.txt
index 8771358..4c68292 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ mistune>=0.8.1
 nbconvert==5.1.1
 nbformat==4.3.0
 notebook>=5.7.2
-numpy==1.12.1
+numpy==1.21.0
 packaging==16.8
 pandocfilters==1.4.1
 pexpect==4.2.1