diff --git a/requirements/CI/requirements.txt b/requirements/CI/requirements.txt
index e527f2015..353b0ff49 100644
--- a/requirements/CI/requirements.txt
+++ b/requirements/CI/requirements.txt
@@ -3,7 +3,7 @@ coverage==5.5
 flake8==3.8.4
 nose==1.3.7
 setuptools-scm==5.0.1
-sphinx==3.5.1
+sphinx==3.5.2
 sphinx-argparse==0.2.5
 sphinx-issues==1.2.0
 sphinx_rtd_theme==0.5.1