diff --git a/tox.ini b/tox.ini
index 6543cbe..0161bce 100644
--- a/tox.ini
+++ b/tox.ini
@@ -30,7 +30,7 @@ setenv = PY_IGNORE_IMPORTMISMATCH=1
 [testenv:docs]
 basepython = python
 changedir = doc
-deps = sphinx>=3.0.0,<7
+deps = sphinx>=3.0.0,<7.2
        setuptools_scm
        python-barcode
        sphinxcontrib-spelling>=7.2.0