diff --git a/chapter01/changelog.xml b/chapter01/changelog.xml
index edf885ab5..56a5cdcc6 100644
--- a/chapter01/changelog.xml
+++ b/chapter01/changelog.xml
@@ -40,6 +40,32 @@
     appropriate for the entry or if needed the entire day's listitem.
     -->
 
+    <listitem>
+      <para>2025-12-15</para>
+      <itemizedlist>
+        <listitem>
+          <para>[bdubbs] - Update to tzdata2025c. Fixes
+          <ulink url='&lfs-ticket-root;5833'>#5833</ulink>.</para>
+        </listitem>
+        <listitem>
+          <para>[bdubbs] - Update to Python-3.14.2 (Security update). Fixes
+          <ulink url='&lfs-ticket-root;5831'>#5831</ulink>.</para>
+        </listitem>
+        <listitem>
+          <para>[bdubbs] - Update to meson-1.10.0. Fixes
+          <ulink url='&lfs-ticket-root;5832'>#5832</ulink>.</para>
+        </listitem>
+        <listitem>
+          <para>[bdubbs] - Update to linux-6.18.1. Fixes
+          <ulink url='&lfs-ticket-root;5830'>#5830</ulink>.</para>
+        </listitem>
+        <listitem>
+          <para>[bdubbs] - Update to iproute2-6.18.0. Fixes
+          <ulink url='&lfs-ticket-root;5829'>#5829</ulink>.</para>
+        </listitem>
+      </itemizedlist>
+    </listitem>
+
     <listitem>
       <para>2025-12-01</para>
       <itemizedlist>
diff --git a/chapter01/whatsnew.xml b/chapter01/whatsnew.xml
index eacb4a17b..e78261385 100644
--- a/chapter01/whatsnew.xml
+++ b/chapter01/whatsnew.xml
@@ -257,9 +257,9 @@
     <!--<listitem>
       <para>Texinfo-&texinfo-version;</para>
     </listitem>-->
-    <!--<listitem>
+    <listitem>
       <para>Tzdata-&tzdata-version;</para>
-    </listitem>-->
+    </listitem>
     <!--<listitem revision="sysv">
       <para>Udev from Systemd-&systemd-version;</para>
     </listitem>-->
diff --git a/packages.ent b/packages.ent
index 1ef7c2464..c3c27eea0 100644
--- a/packages.ent
+++ b/packages.ent
@@ -333,10 +333,10 @@
 <!ENTITY intltool-fin-du "1.5 MB">
 <!ENTITY intltool-fin-sbu "less than 0.1 SBU">
 
-<!ENTITY iproute2-version "6.17.0">
-<!ENTITY iproute2-size "919 KB">
+<!ENTITY iproute2-version "6.18.0">
+<!ENTITY iproute2-size "924 KB">
 <!ENTITY iproute2-url "&kernel;linux/utils/net/iproute2/iproute2-&iproute2-version;.tar.xz">
-<!ENTITY iproute2-md5 "7cecf99ef6877bddd958539c4160eaf6">
+<!ENTITY iproute2-md5 "9e3f70620db43fe0ecab29b36a47914d">
 <!ENTITY iproute2-home "&kernel;linux/utils/net/iproute2/">
 <!ENTITY iproute2-fin-du "17 MB">
 <!ENTITY iproute2-fin-sbu "0.1 SBU">
@@ -422,14 +422,14 @@
 <!ENTITY libxcrypt-fin-sbu "0.1 SBU">
 
 <!ENTITY linux-major-version "6">
-<!ENTITY linux-minor-version "17">
+<!ENTITY linux-minor-version "18">
 <!ENTITY linux-majmin-version "&linux-major-version;.&linux-minor-version;">
-<!ENTITY linux-patch-version "9">
+<!ENTITY linux-patch-version "1">
 <!--<!ENTITY linux-version "&linux-major-version;.&linux-minor-version;">-->
 <!ENTITY linux-version "&linux-major-version;.&linux-minor-version;.&linux-patch-version;">
-<!ENTITY linux-size "149,817 KB">
+<!ENTITY linux-size "150,669 KB">
 <!ENTITY linux-url "&kernel;linux/kernel/v&linux-major-version;.x/linux-&linux-version;.tar.xz">
-<!ENTITY linux-md5 "512f1c964520792d9337f43b9177b181">
+<!ENTITY linux-md5 "b73df036a1896e97c008323a9c50b546">
 <!ENTITY linux-home "https://www.kernel.org/">
 <!-- measured for 6.10.1 / gcc-14.1.0 on x86_64 with -j4 : 
  minimum is allnoconfig 
@@ -496,10 +496,10 @@
 <!ENTITY markupsafe-fin-du "500 KB">
 <!ENTITY markupsafe-fin-sbu "less than 0.1 SBU">
 
-<!ENTITY meson-version "1.9.1">
-<!ENTITY meson-size "4,964 KB">
+<!ENTITY meson-version "1.10.0">
+<!ENTITY meson-size "2,356 KB">
 <!ENTITY meson-url "&github;/mesonbuild/meson/releases/download/&meson-version;/meson-&meson-version;.tar.gz">
-<!ENTITY meson-md5 "19e0a1091cec23d369dd77d852844195">
+<!ENTITY meson-md5 "fe7736c2b6dc4bae42a564f9a5d85f4b">
 <!ENTITY meson-home "https://mesonbuild.com">
 <!ENTITY meson-fin-du "45 MB">
 <!ENTITY meson-fin-sbu "less than 0.1 SBU">
@@ -614,19 +614,19 @@
 <!-- If python minor version changes, updates in python and
      meson pages will be needed: python3.6 and python3.6m -->
 
-<!ENTITY python-version "3.14.0">
+<!ENTITY python-version "3.14.2">
 <!ENTITY python-minor "3.14">
-<!ENTITY python-size "23,043 KB">
+<!ENTITY python-size "23,014 KB">
 <!ENTITY python-url "https://www.python.org/ftp/python/&python-version;/Python-&python-version;.tar.xz">
-<!ENTITY python-md5 "41389edaf9c643263cbed9b5ed307df8">
+<!ENTITY python-md5 "19a31b2838db3b53f9f2db8782bf8773">
 <!ENTITY python-home "https://www.python.org/">
 <!ENTITY python-tmp-du "546 MB">
 <!ENTITY python-tmp-sbu "0.5 SBU">
 <!ENTITY python-fin-du "453 MB">
 <!ENTITY python-fin-sbu "2.0 SBU">
 <!ENTITY python-docs-url "https://www.python.org/ftp/python/doc/&python-version;/python-&python-version;-docs-html.tar.bz2">
-<!ENTITY python-docs-md5 "658b4f9a0f720f161cf6b3f5798a8139">
-<!ENTITY python-docs-size "10,568 KB">
+<!ENTITY python-docs-md5 "43371faecf09acafc877b54df75871bd">
+<!ENTITY python-docs-size "10,525 KB">
 
 <!ENTITY readline-version "8.3">
 <!ENTITY readline-soversion "8.3"><!-- used for stripping -->
@@ -743,10 +743,10 @@
 <!ENTITY texinfo-fin-du "160 MB">
 <!ENTITY texinfo-fin-sbu "0.4 SBU">
 
-<!ENTITY tzdata-version "2025b">
-<!ENTITY tzdata-size "454 KB">
+<!ENTITY tzdata-version "2025c">
+<!ENTITY tzdata-size "459 KB">
 <!ENTITY tzdata-url "https://www.iana.org/time-zones/repository/releases/tzdata&tzdata-version;.tar.gz">
-<!ENTITY tzdata-md5 "ad65154c48c74a9b311fe84778c5434f">
+<!ENTITY tzdata-md5 "7250c862872c33104b73e7d0bd3cb25f">
 <!ENTITY tzdata-home "https://www.iana.org/time-zones">
 
 <!ENTITY udev-lfs-version "udev-lfs-20230818">