diff --git a/chapter01/changelog.xml b/chapter01/changelog.xml
index a06f3e6cf..586169c7a 100644
--- a/chapter01/changelog.xml
+++ b/chapter01/changelog.xml
@@ -43,6 +43,20 @@
     appropriate for the entry or if needed the entire day's listitem.
     -->
 
+    <listitem>
+      <para>2019-03-26</para>
+      <itemizedlist>
+        <listitem>
+          <para>[bdubbs] - Update to tzdata2019a. Fixes
+          <ulink url="&lfs-ticket-root;4448">#4448</ulink>.</para>
+        </listitem>
+        <listitem>
+          <para>[bdubbs] - Update to Python-3.7.3. Fixes
+          <ulink url="&lfs-ticket-root;4447">#4447</ulink>.</para>
+        </listitem>
+      </itemizedlist>
+    </listitem>
+
     <listitem>
       <para>2019-03-25</para>
       <itemizedlist>
diff --git a/chapter01/whatsnew.xml b/chapter01/whatsnew.xml
index 84c491125..4d6d2b607 100644
--- a/chapter01/whatsnew.xml
+++ b/chapter01/whatsnew.xml
@@ -206,9 +206,9 @@
     <!--<listitem>
       <para>Psmisc-&psmisc-version;</para>
     </listitem>-->
-    <!--<listitem>
+    <listitem>
       <para>Python-&python-version;</para>
-    </listitem>-->
+    </listitem>
     <!--<listitem>
       <para>Readline-&readline-version;</para>
     </listitem>-->
@@ -236,9 +236,9 @@
    <listitem>
       <para>Texinfo-&texinfo-version;</para>
    </listitem>
-   <!--<listitem>
+   <listitem>
       <para>Tzdata-&tzdata-version;</para>
-   </listitem>-->
+   </listitem>
    <!--<listitem>
       <para>Util-Linux-&util-linux-version;</para>
    </listitem>-->
diff --git a/general.ent b/general.ent
index 53e35a6a4..f20e361f5 100644
--- a/general.ent
+++ b/general.ent
@@ -1,13 +1,13 @@
-<!ENTITY version         "SVN-20190325">
+<!ENTITY version         "SVN-20190326">
 <!ENTITY short-version   "svn">  <!-- Used below in &blfs-book; 
                                       Change to x.y for release but not -rc releases -->
 <!ENTITY generic-version "development"> <!-- Use "development"  or "x.y[-pre{x}]" -->
 
-<!ENTITY versiond        "20190325-systemd">
+<!ENTITY versiond        "20190326-systemd">
 <!ENTITY short-versiond  "systemd">
 <!ENTITY generic-versiond "systemd"> 
 
-<!ENTITY releasedate     "March 25, 2019">
+<!ENTITY releasedate     "March 26, 2019">
 
 <!ENTITY copyrightdate   "1999-2019"><!-- jhalfs needs a literal dash, not &ndash; -->
 <!ENTITY milestone       "8.5">
diff --git a/packages.ent b/packages.ent
index 6434bf806..41bf1d33f 100644
--- a/packages.ent
+++ b/packages.ent
@@ -574,19 +574,19 @@
 <!-- If python minor version changes, updates in python and 
      meson pages will be needed: python3.6 and python3.6m -->
 
-<!ENTITY python-version "3.7.2">
+<!ENTITY python-version "3.7.3">
 <!ENTITY python-minor "3.7">
-<!ENTITY python-size "16,648 KB">
+<!ENTITY python-size "16,708 KB">
 <!ENTITY python-url "https://www.python.org/ftp/python/&python-version;/Python-&python-version;.tar.xz">
-<!ENTITY python-md5 "df6ec36011808205beda239c72f947cb">
+<!ENTITY python-md5 "93df27aec0cd18d6d42173e601ffbbfd">
 <!ENTITY python-home "https://www.python.org/">
 <!ENTITY python-ch5-du "371 MB">
 <!ENTITY python-ch5-sbu "1.5 SBU">
 <!ENTITY python-ch6-du "392 MB">
 <!ENTITY python-ch6-sbu "1.0 SBU">
 <!ENTITY python-docs-url "https://docs.python.org/ftp/python/doc/&python-version;/python-&python-version;-docs-html.tar.bz2">
-<!ENTITY python-docs-md5 "107ade7bb17efd104a22b2d457f4cb67">
-<!ENTITY python-docs-size "6,072 KB">
+<!ENTITY python-docs-md5 "48ed2b9e97e83f4d0966f305b8e04aa4">
+<!ENTITY python-docs-size "6,079 KB">
 
 <!ENTITY readline-version "8.0">
 <!ENTITY readline-size "2,907 KB">
@@ -675,10 +675,10 @@
 <!ENTITY texinfo-ch6-du "129 MB">
 <!ENTITY texinfo-ch6-sbu "0.9 SBU">
 
-<!ENTITY tzdata-version "2018i">
-<!ENTITY tzdata-size "369 KB">
+<!ENTITY tzdata-version "2019a">
+<!ENTITY tzdata-size "371 KB">
 <!ENTITY tzdata-url "https://www.iana.org/time-zones/repository/releases/tzdata&tzdata-version;.tar.gz">
-<!ENTITY tzdata-md5 "b3f0a1a789480a036e58466cd0702477">
+<!ENTITY tzdata-md5 "288f7b1e43018c633da108f13b27cf91">
 <!ENTITY tzdata-home "https://www.iana.org/time-zones">
 
 <!ENTITY udev-lfs-version "udev-lfs-20171102">