diff --git a/docs/requirements.txt b/docs/requirements.txt
index a99d1b78f..3d34b47da 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,4 @@
-Sphinx==3.0.1
-sphinx-hoverxref==0.2b1
-sphinx-notfound-page==0.4
-sphinx_rtd_theme==0.4.3
+Sphinx>=3.0
+sphinx-hoverxref>=0.2b1
+sphinx-notfound-page>=0.4
+sphinx_rtd_theme>=0.4