diff --git a/book/requirements.txt b/book/requirements.txt
index 77974d3..6edb3ea 100644
--- a/book/requirements.txt
+++ b/book/requirements.txt
@@ -1,5 +1,5 @@
-jupyter-book
-docutils==0.17.1
+jupyter-book==1.0.0
+docutils
 sphinx-inline-tabs
 sphinx-examples
 sphinx-proof