diff --git a/doc/requirements.txt b/doc/requirements.txt
index 4c6d558e2..744cac57b 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,4 +1,4 @@
-sphinx_book_theme
+sphinx-book-theme
 myst-parser
 sphinx-copybutton
 sphinx-design