diff --git a/doc/requirements.txt b/doc/requirements.txt
index ddcce166..963e17ab 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -3,7 +3,7 @@ semver==2.8.1
 sphinx==3.5.2
 sphinx-js==3.1
 furo==2021.2.28b28
-pygments==2.6.1
+pygments==2.7.4
 #FIXME: switch to stable after C# changes have been merged: https://github.com/djungelorm/sphinx-csharp/pull/8
 git+https://github.com/reuben/sphinx-csharp.git@9dc6202f558e3d3fa14ec7f5f1e36a8e66e6d622
-recommonmark==0.7.1
\ No newline at end of file
+recommonmark==0.7.1