diff --git a/rust-rustc-serialize.spec b/rust-rustc-serialize.spec
index 55372ed..e6d01cc 100644
--- a/rust-rustc-serialize.spec
+++ b/rust-rustc-serialize.spec
@@ -7,7 +7,7 @@
 
 Name:           rust-%{crate}
 Version:        0.3.24
-Release:        11%{?dist}
+Release:        12%{?dist}
 Summary:        Generic serialization/deserialization support
 
 # Upstream license specification: MIT/Apache-2.0
@@ -75,6 +75,9 @@ which use "default" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Wed Jul 29 2020 Fedora Release Engineering <releng@fedoraproject.org> - 0.3.24-12
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild
+
 * Thu Jan 30 2020 Fedora Release Engineering <releng@fedoraproject.org> - 0.3.24-11
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild