diff --git a/docs/requirements.txt b/docs/requirements.txt
index 12f2d494a08ef..20bb548a9c1b3 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -161,9 +161,9 @@ sphinx-tabs==2.1.0 \
     --hash=sha256:0b5a8dd71d87197a01eef3b9d1e1a70513f4dd45e8af7783d1ab74c3fb2cbc6c \
     --hash=sha256:9d8db61afe9499aa84b33bc1c0d891f8a0df88ae513739f5babde15430c1fdaf
     # via -r docs/requirements.txt
-sphinx==3.5.4 \
-    --hash=sha256:19010b7b9fa0dc7756a6e105b2aacd3a80f798af3c25c273be64d7beeb482cb1 \
-    --hash=sha256:2320d4e994a191f4b4be27da514e46b3d6b420f2ff895d064f52415d342461e8
+sphinx==4.0.1 \
+    --hash=sha256:b2566f5f339737a6ef37198c47d56de1f4a746c722bebdb2fe045c34bfd8b9d0 \
+    --hash=sha256:cf5104777571b2b7f06fa88ee08fade24563f4a0594cf4bd17d31c47b8740b4c
     # via
     #   -r docs/requirements.txt
     #   sphinx-copybutton