diff --git a/slic3r.spec b/slic3r.spec
index 5b37d6b..bfde59e 100644
--- a/slic3r.spec
+++ b/slic3r.spec
@@ -5,7 +5,7 @@
 
 Name:           slic3r
 Version:        1.3.0
-Release:        17%{?dist}
+Release:        18%{?dist}
 Summary:        G-code generator for 3D printers (RepRap, Makerbot, Ultimaker etc.)
 License:        AGPLv3 and CC-BY
 # Images are CC-BY, code is AGPLv3
@@ -252,6 +252,9 @@ SLIC3R_NO_AUTO=1 perl Build.PL installdirs=vendor
 %{_datadir}/%{name}
 
 %changelog
+* Wed Jan 27 2021 Fedora Release Engineering <releng@fedoraproject.org> - 1.3.0-18
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
+
 * Fri Jan 22 2021 Jonathan Wakely <jwakely@redhat.com> - 1.3.0-17
 - Rebuilt for Boost 1.75