diff --git a/requirements.txt b/requirements.txt
index 06a25917..31b1db3f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-sphinx==4.0.1
-sphinx_rtd_theme==1.2.0
-readthedocs-sphinx-search==0.1.0rc3
+sphinx>=4.0.1
+sphinx_rtd_theme>=1.2.0
+readthedocs-sphinx-search>=0.1.0rc3