diff --git a/python-WebTest.changes b/python-WebTest.changes
index 523b011..fb51f33 100644
--- a/python-WebTest.changes
+++ b/python-WebTest.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Feb  1 17:24:01 UTC 2024 - Dirk Müller <dmueller@suse.com>
+
+- use python311 build for documentation on SLE15
+
 -------------------------------------------------------------------
 Wed Sep 20 14:48:54 UTC 2023 - Markéta Machová <mmachova@suse.com>
 
@@ -198,7 +203,7 @@ Mon Jan 13 14:01:30 UTC 2014 - dmueller@suse.com
 
 - update to 2.0.11:
   * Depend on unittest2 only for Python versions lower than 2.7
-  * Add an optional parameter to TestApp, allowing the user to 
+  * Add an optional parameter to TestApp, allowing the user to
   specify the parser used by BeautifulSoup
 
 -------------------------------------------------------------------
diff --git a/python-WebTest.spec b/python-WebTest.spec
index 8563796..494ed67 100644
--- a/python-WebTest.spec
+++ b/python-WebTest.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package python-WebTest
 #
-# Copyright (c) 2023 SUSE LLC
+# Copyright (c) 2024 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -40,8 +40,13 @@ BuildRequires:  %{python_module waitress >= 0.8.5}
 BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
 # Documentation build requirements:
+%if 0%{?suse_version} == 1500
+BuildRequires:  python311-Sphinx
+BuildRequires:  python311-pylons-sphinx-themes
+%else
 BuildRequires:  python3-Sphinx
 BuildRequires:  python3-pylons-sphinx-themes
+%endif
 Requires:       python-WebOb >= 1.2
 Requires:       python-beautifulsoup4
 Requires:       python-waitress >= 0.8.5