diff --git a/docs/requirements.txt b/docs/requirements.txt
index eacd2d16..d8704109 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,4 @@
-sphinx>=1.8
+Sphinx==3.0.3
 sphinx-copybutton
 furo==2020.10.5b9
-jinja2
\ No newline at end of file
+Jinja2
\ No newline at end of file