diff --git a/doc/requirements.txt b/doc/requirements.txt
index 1516a0a..711d57f 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -11,3 +11,4 @@ sphinx-copybutton
 ipython
 mock
 mpmath>=1.3.0
+rich
\ No newline at end of file