diff --git a/docs/requirements.txt b/docs/requirements.txt
index 746cfc35ebadb..ff2aac364a185 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -86,9 +86,9 @@ smmap==4.0.0 \
 snowballstemmer==2.1.0 \
     --hash=sha256:b51b447bea85f9968c13b650126a888aabd4cb4463fca868ec596826325dedc2 \
     --hash=sha256:e997baa4f2e9139951b6f4c631bad912dfd3c792467e2f03d7239464af90e914
-Sphinx==3.2.1 \
-    --hash=sha256:321d6d9b16fa381a5306e5a0b76cd48ffbc588e6340059a729c6fdd66087e0e8 \
-    --hash=sha256:ce6fd7ff5b215af39e2fcd44d4a321f6694b4530b6f2b2109b64d120773faea0
+Sphinx==3.5.3 \
+    --hash=sha256:3f01732296465648da43dec8fb40dc451ba79eb3e2cc5c6d79005fd98197107d \
+    --hash=sha256:ce9c228456131bab09a3d7d10ae58474de562a6f79abb3dc811ae401cf8c1abc
 sphinx-copybutton==0.3.1 \
     --hash=sha256:5125c718e763596e6e52d92e15ee0d6f4800ad3817939be6dee51218870b3e3d \
     --hash=sha256:0e0461df394515284e3907e3f418a0c60ef6ab6c9a27a800c8552772d0a402a2