diff --git a/.gitignore b/.gitignore
index c68c734..a55cde2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
 SOURCES/javazic-1.8-37392f2f5d59.tar.xz
 SOURCES/javazic.tar.gz
-SOURCES/tzcode2025a.tar.gz
-SOURCES/tzdata2025a.tar.gz
+SOURCES/tzcode2025b.tar.gz
+SOURCES/tzdata2025b.tar.gz
diff --git a/.tzdata.metadata b/.tzdata.metadata
index 70d14df..1913b75 100644
--- a/.tzdata.metadata
+++ b/.tzdata.metadata
@@ -1,4 +1,4 @@
 77292e1839952807567570118e01405b405af80c SOURCES/javazic-1.8-37392f2f5d59.tar.xz
 ee8ad215161cd132e65e2be447b279457158b540 SOURCES/javazic.tar.gz
-31e24f86fda44de2409c8d49708c2145f1ed8030 SOURCES/tzcode2025a.tar.gz
-e5b9eeb4388c91e462447cafb342d6584243f546 SOURCES/tzdata2025a.tar.gz
+30ede27ab7d353270714e6eec2eb36b712c53426 SOURCES/tzcode2025b.tar.gz
+619f59455fc146b9882a03fb9db2b7a044b5fcd6 SOURCES/tzdata2025b.tar.gz
diff --git a/SPECS/tzdata.spec b/SPECS/tzdata.spec
index d6c8284..613cde2 100644
--- a/SPECS/tzdata.spec
+++ b/SPECS/tzdata.spec
@@ -1,8 +1,8 @@
 Summary: Timezone data
 Name: tzdata
-Version: 2025a
-%define tzdata_version 2025a
-%define tzcode_version 2025a
+Version: 2025b
+%define tzdata_version 2025b
+%define tzcode_version 2025b
 Release: 1%{?dist}
 License: Public Domain
 Group: System Environment/Base
@@ -168,7 +168,13 @@ echo ============END TESTING===========
 %{_datadir}/javazi-1.8
 
 %changelog
-* Tue Jan 21 2025 Patsy Griffin <pats@redhat.com> - 2025a-1
+* Mon Mar 24 2025 Patsy Griffin <patsy@redhat.com> - 2025b-1
+- Update to tzdata-2025b (RHEL-84748)
+  - Chile's Aysén Region moves from -04/-03
+    to -03 year-round, diverging from America/Santiago and
+    creating a new zone America/Coyhaique.
+
+* Tue Jan 21 2025 Patsy Griffin <patsy@redhat.com> - 2025a-1
   Update to tzdata-2025a (RHEL-74309)
   - Paraguay is now permanently at -03. This impacts timestamps
     starting on 2025-03-22.