diff --git a/doc/requirements.txt b/doc/requirements.txt
index dcc0b7c05..ce8e6b307 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,2 +1,2 @@
 sphinx>=1.6.2
-sphinx_rtd_theme==0.2.4
+sphinx_rtd_theme>=0.4.3