diff --git a/docs/requirements.txt b/docs/requirements.txt
index e5ffcd5c..617d8d2f 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,3 @@
-sphinx >= 2.1
 sphinx-rtd-theme
 myst-parser
 tomli >= 1.1.0 ; python_version < "3.11"
diff --git a/pyproject.toml b/pyproject.toml
index b0701992..a03498fd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -101,8 +101,7 @@ deps             = pytest
 commands         = pytest
 
 [testenv:docs]
-deps             = sphinx >= 2.1
-                   sphinx-rtd-theme
+deps             = sphinx-rtd-theme
                    myst-parser
                    linkchecker
                    tomli >= 1.1.0 ; python_version < "3.11"