diff --git a/docs/conf.py b/docs/conf.py
index 7c96d53..12a1776 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -58,7 +58,7 @@
 
 # General information about the project.
 project = "Datawrapper"
-copyright = "2021, Sergio Sánchez Zavala"
+copyright = "2023, Sergio Sánchez Zavala"
 author = "Sergio Sánchez Zavala"
 
 # The version info for the project you're documenting, acts as replacement
@@ -190,3 +190,6 @@
 
 # Jupyter notebooks execution
 jupyter_execute_notebooks = "off"
+
+# bibtext files
+bibtex_bibfiles = ["refs.bib"]
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 1565a44..3cce43c 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,6 +1,6 @@
-myst-nb==0.12.0
-sphinx-tabs==2.1.0
-sphinxcontrib-bibtex==1.0.0
-sphinx-book-theme==0.0.42
-importlib_metadata==1.6.1
+myst-nb==0.17.1
+sphinx-tabs==3.4.1
+sphinxcontrib-bibtex==2.5.0
+sphinx-book-theme==1.0.1
+importlib-metadata==6.1.0
 datawrapper