diff --git a/dev-requirements.txt b/dev-requirements.txt
index bb2e765f6..5a75a7e2e 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -5,4 +5,4 @@ pytest
 pytest-cov
 
 # Only for building documentation
-Sphinx>=1.8,<1.9
+Sphinx>=1.8,<7.5