diff --git a/ci/requirements-docs.txt b/ci/requirements-docs.txt
index e6877b9..f0519c4 100644
--- a/ci/requirements-docs.txt
+++ b/ci/requirements-docs.txt
@@ -20,7 +20,7 @@ numpy==1.22.0
 packaging==20.3           # via sphinx
 pandas==1.0.3             # via xarray
 pycparser==2.20           # via cffi
-pygments==2.7.4           # via sphinx
+pygments==2.15.0          # via sphinx
 pyparsing==2.4.7          # via packaging
 pytest-runner==5.2
 python-dateutil==2.8.1    # via pandas