diff --git a/python-certomancer.changes b/python-certomancer.changes
index 7baf06c..bc88f7e 100644
--- a/python-certomancer.changes
+++ b/python-certomancer.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Fri Feb  6 01:16:34 UTC 2026 - Steve Kowalik <steven.kowalik@suse.com>
+
+- Explicitly BuildRequires on pytz.
+
 -------------------------------------------------------------------
 Mon Aug 11 06:24:15 UTC 2025 - Steve Kowalik <steven.kowalik@suse.com>
 
diff --git a/python-certomancer.spec b/python-certomancer.spec
index df97b52..654f9fa 100644
--- a/python-certomancer.spec
+++ b/python-certomancer.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package python-certomancer
 #
-# Copyright (c) 2025 SUSE LLC and contributors
+# Copyright (c) 2026 SUSE LLC and contributors
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -46,6 +46,7 @@ BuildRequires:  %{python_module pyhanko-certvalidator}
 BuildRequires:  %{python_module pytest-asyncio}
 BuildRequires:  %{python_module pytest}
 BuildRequires:  %{python_module python-dateutil >= 2.8.1}
+BuildRequires:  %{python_module pytz}
 BuildRequires:  %{python_module requests-mock}
 BuildRequires:  %{python_module requests}
 BuildRequires:  %{python_module tzlocal >= 2.1}