diff --git a/requirements/CI/requirements.txt b/requirements/CI/requirements.txt
index d37c7a99d..3c64e0b4f 100644
--- a/requirements/CI/requirements.txt
+++ b/requirements/CI/requirements.txt
@@ -5,7 +5,7 @@ pytest==6.2.2
 pytest-cov==2.11.1
 pytest-xdist==2.2.1
 setuptools-scm==5.0.2
-sphinx==3.5.1
+sphinx==3.5.2
 sphinx-argparse==0.2.5
 sphinx-issues==1.2.0
 sphinx_rtd_theme==0.5.1