diff --git a/libarcus.spec b/libarcus.spec
index 1f56c18..8288373 100644
--- a/libarcus.spec
+++ b/libarcus.spec
@@ -1,6 +1,6 @@
 Name:           libarcus
 Version:        4.6.1
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Communication library between internal components for Ultimaker software
 License:        LGPLv3+
 URL:            https://github.com/Ultimaker/libArcus
@@ -89,6 +89,9 @@ sed -i 's/Python3_SITELIB/Python3_SITEARCH/' cmake/SIPMacros.cmake
 %{python3_sitearch}/Arcus.so
 
 %changelog
+* Tue Jul 28 2020 Fedora Release Engineering <releng@fedoraproject.org> - 4.6.1-4
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild
+
 * Sun Jun 14 2020 Adrian Reber <adrian@lisas.de> - 4.6.1-3
 - Rebuilt for protobuf 3.12