diff --git a/.gitignore b/.gitignore
index f4ca566..714f3b0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -220,3 +220,5 @@ noarch/
 /tzdata2025a.tar.gz
 /tzcode2025b.tar.gz
 /tzdata2025b.tar.gz
+/tzcode2025c.tar.gz
+/tzdata2025c.tar.gz
diff --git a/sources b/sources
index 5da021f..0b8efef 100644
--- a/sources
+++ b/sources
@@ -1,3 +1,3 @@
 SHA512 (javazic-1.8-37392f2f5d59.tar.xz) = 2ba718dfeed53a3bd6b44e3dfe96338a609e482e4e6d942e2a7e622fc6c52606cb323ac3a59739c463e34f70fff217c0a61f5b3d3c4958eff2801b1504ee4204
-SHA512 (tzcode2025b.tar.gz) = 19826b12968c10fc4db7e4b07ba782bfb8590eeebaec6f719d74b92a2e642ab817bd72bceff0015ce52a838edfdb00753b3cd87dd84b35abf2606e5bee445f76
-SHA512 (tzdata2025b.tar.gz) = 7d83741f3cae81fac8131994b43c55b6da7328df18b706e5ee40e9b3212bc506e6f8fc90988b18da424ed59eff69bce593f2783b7b5f18eb483a17aeb94258d6
+SHA512 (tzcode2025c.tar.gz) = d14bc0680b9cb33d6526a2c0e483f2abafc2593cfe5fbfe7dcab940aafdc1baaec065dbaa1bb58b03586a8631ffdf43ebb22ff5a70503298b6ea2cf061d82c16
+SHA512 (tzdata2025c.tar.gz) = 1e33f7212fd0ae2ad3c16e68f0c1fc7a6ad26a126b8406c379a5768d79604c6a816054bd0fe3a63228d70cd6a1fc2b1bae2a9f8014e102d3727eb9d21affa1f1
diff --git a/tzdata.spec b/tzdata.spec
index 118306a..89b5f5b 100644
--- a/tzdata.spec
+++ b/tzdata.spec
@@ -1,9 +1,9 @@
 Summary: Timezone data
 Name: tzdata
-Version: 2025b
-%define tzdata_version 2025b
-%define tzcode_version 2025b
-Release: 2%{?dist}
+Version: 2025c
+%define tzdata_version 2025c
+%define tzcode_version 2025c
+Release: 1%{?dist}
 License: LicenseRef-Fedora-Public-Domain AND (GPL-2.0-only WITH ClassPath-exception-2.0)
 URL: https://www.iana.org/time-zones
 Source0: ftp://ftp.iana.org/tz/releases/tzdata%{tzdata_version}.tar.gz
@@ -46,7 +46,7 @@ This package contains timezone information for use by Java runtimes.
 # tzdata-2018g introduced 25:00 transition times.  This breaks OpenJDK.
 # Use rearguard for java
 mkdir rearguard
-make VERSION=%{version} tzdata%{version}-rearguard.tar.gz
+make VERSION=%{version} tzdata%{version}-rearguard.tar.gz.t
 mv tzdata%{version}-rearguard.tar.gz rearguard
 pushd rearguard
 tar zxf tzdata%{version}-rearguard.tar.gz
@@ -138,6 +138,10 @@ echo ============END TESTING===========
 %{_datadir}/javazi-1.8
 
 %changelog
+* Wed Dec 10 2025 Patsy Griffin <patsy@redhat.com> - 2025c-1
+- Update to tzdata-2025c (RHEL-135156)
+  - Update leap seconds file expiration date
+
 * Fri Jul 25 2025 Patsy Griffin <patsy@redhat.com> - 2025b-2
 - Included NEWS file with docs. (RHEL-105042)