diff --git a/docs/requirements.txt b/docs/requirements.txt
index 6eddae1..ac3a110 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,6 +1,6 @@
 ipython>=2.1.0
 matplotlib==1.3.1
-numpy==1.8.1
+numpy==1.21.0
 scikit-learn==0.15.1
 scipy==0.13.3
 nose==1.3.3