diff --git a/tests/test_requirements.txt b/tests/test_requirements.txt
index 745692d..ae0dbec 100644
--- a/tests/test_requirements.txt
+++ b/tests/test_requirements.txt
@@ -7,4 +7,5 @@ click
 # docs
 mkdocs-git-revision-date-localized-plugin
 mkdocs-windmill
-mkdocs-img2fig-plugin
\ No newline at end of file
+mkdocs-img2fig-plugin
+mkdocs-charts-plugin
\ No newline at end of file