1 files changed, 1 insertions, 0 deletions
diff --git a/README b/README
index 206d3055..9b892363 100644
--- a/README
+++ b/README
@@ -4,6 +4,7 @@ To build things on a Debian (-based) system, install these packages:
  - make
  - python3-sphinx
  - python3-recommonmark
+ - python3-sphinx-book-theme
  - graphviz
  - texlive-latex-extra
  - dvipng