diff --git a/python-contextualbandits.spec b/python-contextualbandits.spec
index 7584ba3..b8ca0ec 100644
--- a/python-contextualbandits.spec
+++ b/python-contextualbandits.spec
@@ -14,7 +14,7 @@ serve as a guide in learning about contextual bandits.}
 
 Name:           python-%{pypi_name}
 Version:        0.3.21
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Python implementations of algorithms for contextual bandits
 
 License:        BSD
@@ -86,6 +86,9 @@ rm -rf html/.{doctrees,buildinfo}
 %doc example/
 
 %changelog
+* Mon Jan 22 2024 Fedora Release Engineering <releng@fedoraproject.org> - 0.3.21-4
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild
+
 * Fri Jul 21 2023 Fedora Release Engineering <releng@fedoraproject.org> - 0.3.21-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild