diff --git a/rubygem-json.spec b/rubygem-json.spec
index eca1df7..3017e55 100644
--- a/rubygem-json.spec
+++ b/rubygem-json.spec
@@ -1,6 +1,6 @@
 %global	gem_name	json
 
-%global	pkg_version_num		2.21.0
+%global	pkg_version_num		2.21.1
 %dnl		%global	pkg_version_alpha
 %global	gem_version()		%{pkg_version_num}%{?pkg_version_alpha:.%pkg_version_alpha}
 
@@ -136,6 +136,9 @@ popd
 
 
 %changelog
+* Mon Jul 13 2026 Mamoru TASAKA <mtasaka@fedoraproject.org> - 2.21.1-1
+- 2.21.1
+
 * Sun Jul 12 2026 Mamoru TASAKA <mtasaka@fedoraproject.org> - 2.21.0-1
 - 2.21.0
 
diff --git a/sources b/sources
index e164254..758082e 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (json-2.21.0.gem) = 05ba81fec73980221694a69c8e349e64a056cdf878f7057e90250b8050e0f7c2e64f45d2cf6457e423d445cf3b7289ec24fe6df69565f8b9fd4f9017b5550852
-SHA512 (rubygem-json-2.21.0-missing-files.tar.gz) = 9618a0504c3d156df239c88ab507d446cd83ccd0f954211ab54de33171ea81f8f3c4bc001a0011ce8fd0afb7d1b761a55b547a567b35b278273cd6653b2f3108
+SHA512 (json-2.21.1.gem) = 528f7c6b1aebbe011ea2c39e2297fd780d387a52e95a91496adfbfe20510102f4f12c955d8edc379740fc90582a70d77c24fbc93b9798520c916104dfc43eb6f
+SHA512 (rubygem-json-2.21.1-missing-files.tar.gz) = 41e6c11479e4a697bcd0478cb7abbd718296f89dd88f547a4cbcea4283b939cd17f3427f433353ecf5ee1d6a661524530ed13cad9f88ecda6f42491d746024e9