diff --git a/general/sysutils/modemmanager.xml b/general/sysutils/modemmanager.xml
index 3b3b2219bf..be8bdc01a9 100644
--- a/general/sysutils/modemmanager.xml
+++ b/general/sysutils/modemmanager.xml
@@ -6,7 +6,7 @@
 
   <!ENTITY ModemManager-download-http "https://www.freedesktop.org/software/ModemManager/ModemManager-&ModemManager-version;.tar.xz">
   <!ENTITY ModemManager-download-ftp  " ">
-  <!ENTITY ModemManager-md5sum        "91300c8cb79ce64f5d678958d064e14b">
+  <!ENTITY ModemManager-md5sum        "bde995400758db3a98c886608c2d5d9d">
   <!ENTITY ModemManager-size          "2.2 MB">
   <!ENTITY ModemManager-buildsize     "136 MB (with tests)">
   <!ENTITY ModemManager-time          "0.5 SBU (Using parallelism=4; with tests)">
diff --git a/introduction/welcome/changelog.xml b/introduction/welcome/changelog.xml
index af57f0b270..38779c2de6 100644
--- a/introduction/welcome/changelog.xml
+++ b/introduction/welcome/changelog.xml
@@ -45,6 +45,10 @@
     <listitem>
       <para>June 7th, 2021</para>
       <itemizedlist>
+        <listitem>
+          <para>[renodr] - Update to ModemManager-1.16.6. Fixes
+          <ulink url="&blfs-ticket-root;15136">#15136</ulink>.</para>
+        </listitem>
         <listitem>
           <para>[renodr] - Update to icewm-2.4.0. Fixes
           <ulink url="&blfs-ticket-root;15140">#15140</ulink>.</para>
diff --git a/packages.ent b/packages.ent
index a9bac88428..9e6c6e7890 100644
--- a/packages.ent
+++ b/packages.ent
@@ -296,7 +296,7 @@ to avoid building libxml2 twice, which is slow with all deps -->
 <!ENTITY logrotate-version            "3.18.1">
 <!ENTITY lsb-tools-version            "0.9">
 <!ENTITY mc-version                   "4.8.26">
-<!ENTITY ModemManager-version         "1.16.4">
+<!ENTITY ModemManager-version         "1.16.6">
 <!ENTITY notification-daemon-version  "3.20.0">
 <!ENTITY obex-data-server-version     "0.4.6">
 <!ENTITY p7zip-version                "17.04">