diff --git a/doc/source/whatsnew/index.rst b/doc/source/whatsnew/index.rst
index 0b2d28f8317f1..f0e190382214b 100644
--- a/doc/source/whatsnew/index.rst
+++ b/doc/source/whatsnew/index.rst
@@ -16,6 +16,7 @@ Version 2.3
 .. toctree::
    :maxdepth: 2
 
+   v2.3.4
    v2.3.3
    v2.3.2
    v2.3.1
diff --git a/environment.yml b/environment.yml
index 2d7740edf453f..8a8d428458241 100644
--- a/environment.yml
+++ b/environment.yml
@@ -86,7 +86,7 @@ dependencies:
   - google-auth
   - natsort  # DataFrame.sort_values doctest
   - numpydoc
-  - pydata-sphinx-theme=0.14
+  - pydata-sphinx-theme=0.16
   - pytest-cython  # doctest
   - sphinx
   - sphinx-design
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 57690b38cf6ee..0785d847b14f6 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -61,7 +61,7 @@ gitdb
 google-auth
 natsort
 numpydoc
-pydata-sphinx-theme==0.14
+pydata-sphinx-theme==0.16
 pytest-cython
 sphinx
 sphinx-design