diff --git a/docs/requirements.txt b/docs/requirements.txt
index 4570513..fead4c2 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -15,7 +15,7 @@ sphinxcontrib-serializinghtml==1.1.4
 tqdm==4.46.0
 mlxtend==0.17.2
 scipy==1.4.1
-numpy==1.18.4
+numpy==1.22.0
 rdflib==5.0.0
 requests==2.23.0
 pystardog==0.9.6