diff --git a/docs/sphinx/source/whatsnew/v0.15.3.rst b/docs/sphinx/source/whatsnew/v0.15.3.rst
index eb36b659ca..7124d28cae 100644
--- a/docs/sphinx/source/whatsnew/v0.15.3.rst
+++ b/docs/sphinx/source/whatsnew/v0.15.3.rst
@@ -18,6 +18,7 @@ Bug fixes
 
 Enhancements
 ~~~~~~~~~~~~
+* Ensure all timezones are available in all OSs. (:issue:`2795`, :pull:`2809`)
 
 
 Documentation
@@ -41,6 +42,7 @@ Requirements
 
 Maintenance
 ~~~~~~~~~~~
+* Fix documentation builds on runner images lacking link-type timezones. (:issue:`2795`, :pull:`2809`)
 
 
 Contributors
diff --git a/pyproject.toml b/pyproject.toml
index f359cc846d..84d5dbc033 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,6 +17,7 @@ dependencies = [
     'requests',
     'scipy >= 1.7.2',
     'h5py',
+    'tzdata', # ensure all timezones are available in all installs for consistency GH#2795
 ]
 license = "BSD-3-Clause"
 classifiers = [