diff --git a/docs/requirements.txt b/docs/requirements.txt
index 0c2a31c0..1a682b21 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -26,4 +26,4 @@ sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-qthelp==1.0.2
 sphinxcontrib-serializinghtml==1.1.3
 urllib3==1.25.3
-sphinx-markdown-tables==0.0.9
\ No newline at end of file
+numpy==1.17.2
\ No newline at end of file