diff --git a/rubygem-rake-compiler.spec b/rubygem-rake-compiler.spec
index 54d187f..5ccd396 100644
--- a/rubygem-rake-compiler.spec
+++ b/rubygem-rake-compiler.spec
@@ -4,7 +4,7 @@
 
 Summary:	Rake-based Ruby C Extension task generator
 Name:		rubygem-%{gem_name}
-Version:	1.3.1
+Version:	1.2.3
 Release:	1%{?dist}
 # SPDX confirmed
 License:	MIT
@@ -124,42 +124,6 @@ popd
 
 
 %changelog
-* Thu Dec 18 2025 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.3.1-1
-- 1.3.1
-
-* Fri Jul 25 2025 Fedora Release Engineering <releng@fedoraproject.org> - 1.3.0-2
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_43_Mass_Rebuild
-
-* Sun Apr 13 2025 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.3.0-1
-- 1.3.0
-
-* Sat Jan 18 2025 Fedora Release Engineering <releng@fedoraproject.org> - 1.2.9-2
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild
-
-* Wed Jan 01 2025 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.2.9-1
-- 1.2.9
-
-* Sat Oct 05 2024 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.2.8-1
-- 1.2.8
-
-* Fri Jul 19 2024 Fedora Release Engineering <releng@fedoraproject.org> - 1.2.7-2
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild
-
-* Thu Feb  1 2024 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.2.7-1
-- 1.2.7
-
-* Thu Jan 25 2024 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.2.6-1
-- 1.2.6
-
-* Thu Aug  3 2023 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.2.5-1
-- 1.2.5
-
-* Tue Aug  1 2023 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.2.4-1
-- 1.2.4
-
-* Fri Jul 21 2023 Fedora Release Engineering <releng@fedoraproject.org> - 1.2.3-2
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild
-
 * Tue May 30 2023 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.2.3-1
 - 1.2.3
 
diff --git a/sources b/sources
index 40aee2e..5ccc5a7 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (rake-compiler-1.3.1.gem) = 9022a55fbb397f218ead147f515047d208a1adf0b240d023117b51e0d9297cd95a3aee9aa60e5f29cb7a8e8de05ec1807d4449b25ddde65e42349a60e5a77e41
-SHA512 (rake-compiler-1.3.1-test-missing-files.tar.gz) = c183725797e92c81503c7942f42f0596b9e41e299f9ff0c8ca020200137eccae5ab67bd10df1dfb940d7a0aad552de2cee094eb396e215d4d6e5397dac559841
+SHA512 (rake-compiler-1.2.3.gem) = 54e4aae8266827b93871aed80047b5bf8d01f8f82e54dc3404ca7c7ac54830e6f8e8a5d3639f476304aa1209ed249c5215cccbe8dfbebf06e6ddd19ac2d1f34a
+SHA512 (rake-compiler-1.2.3-test-missing-files.tar.gz) = abac089a1041f29900d7edfbee4cc1cad3788456c0275c1a1ca5def5379e0668352af4b463ff52da9286445b1c32a02d7b814673f77b01fa3518906cc59a9b3d