diff --git a/README.rst b/README.rst
index e84ce0bda..de3e12b40 100644
--- a/README.rst
+++ b/README.rst
@@ -80,7 +80,7 @@ See the docs for `full installation instructions <https://sleap.ai/installation.
 Learn to SLEAP
 --------------
 - **Learn step-by-step**: `Tutorial <https://sleap.ai/tutorials/tutorial.html>`_
-- **Learn more advanced usage**: `Guides <https://sleap.ai/guides/>`_ and `Notebooks <https://sleap.ai/notebooks/>`_
+- **Learn more advanced usage**: `Guides <https://sleap.ai/guides/>`__ and `Notebooks <https://sleap.ai/notebooks/>`__
 - **Learn by watching**: `MIT CBMM Tutorial <https://cbmm.mit.edu/video/decoding-animal-behavior-through-pose-tracking>`_
 - **Learn by reading**: `Paper (Pereira et al., bioRxiv, 2020) <https://doi.org/10.1101/2020.08.31.276246>`_ and `Review on behavioral quantification (Pereira et al., Nature Neuroscience, 2020) <https://rdcu.be/caH3H>`_
 
diff --git a/dev_requirements.txt b/dev_requirements.txt
index a08e3b49f..e0b85d4de 100644
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -7,9 +7,10 @@ sphinx
 # furo
 sphinx-book-theme
 sphinx-copybutton
-myst-parser
+nbformat==5.1.3
+myst-nb==0.13.2
+myst-parser==0.15.2
 linkify-it-py
-myst-nb
 sphinx-autobuild
 black==21.6b0
 pre-commit