diff --git a/doc/requirements.txt b/doc/requirements.txt
index c602e90b..1757c863 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -2,6 +2,6 @@ sympy
 scipy
 numpy
 sphinx>=6
-readthedocs-sphinx-ext==2.2.0
-sphinx_rtd_theme==2.0.0
+readthedocs-sphinx-ext
+sphinx_rtd_theme
 sphinx-design