diff --git a/requirements.txt b/requirements.txt
index 38011fd39..feaa2f718 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,5 +14,5 @@ sphinx>=2.4
 sphinx-copybutton
 sphinx-issues
 sphinx-removed-in
-sphinx-rtd-theme
+sphinx-rtd-theme>=1.0
 sphinxext-opengraph