diff --git a/book/source/conf.py b/book/source/conf.py
index abacb6f..26f49db 100644
--- a/book/source/conf.py
+++ b/book/source/conf.py
@@ -24,6 +24,11 @@ source_suffix = ['.md', '.rst']
 templates_path = ['_templates']
 exclude_patterns = []
 
+# number code-blocks, figures and tables, if they have a caption
+numfig = True
+# number figures in flat hierarchy
+numfig_secnum_depth = 0
+
 # -- Options for EPUB output -------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#options-for-epub-output
 
@@ -51,8 +56,3 @@ html_theme_options = {
 # we want to circumvent obscure warnings about footnotes following a heading:
 # https://github.com/executablebooks/MyST-Parser/issues/352
 myst_footnote_transition = False
-
-# number code-blocks, figures and tables, if they have a caption
-numfig = True
-# number figures in flat hierarchy
-numfig_secnum_depth = 0