Fix ReadTheDocs build on release branch (#11570)

hauntsaninja · web-flow · commit cf099dc1c6e6 · 2021-11-17T09:40:36.000Z
Some context in #11412 / change as mentioned in #11158 (comment) Co-authored-by: hauntsaninja <>
diff --git a/docs/requirements-docs.txt b/docs/requirements-docs.txt
@@ -1,2 +1,2 @@
-Sphinx >= 1.4.4
-sphinx-rtd-theme >= 0.1.9
+sphinx>=4.2.0,<5.0.0
+sphinx-rtd-theme>=1.0.0,<2.0.0
