diff --git a/man/kernel-command-line.xml b/man/kernel-command-line.xml
index 3f5eaf3ef9f..c648f7779e7 100644
--- a/man/kernel-command-line.xml
+++ b/man/kernel-command-line.xml
@@ -557,7 +557,19 @@
         the hostname, it simply controls the initial hostname set during early boot.</para></listitem>
       </varlistentry>
     </variablelist>
+  </refsect1>
 
+  <refsect1>
+      <title>History</title>
+
+      <variablelist>
+        <varlistentry>
+          <term>systemd 252</term>
+          <listitem><para>Kernel command-line arguments <varname>systemd.unified_cgroup_hierarchy</varname>
+          and <varname>systemd.legacy_systemd_cgroup_controller</varname> were deprecated. Please switch to
+          the unified cgroup hierarchy.</para></listitem>
+        </varlistentry>
+      </variablelist>
   </refsect1>
 
   <refsect1>
diff --git a/man/systemd-system.conf.xml b/man/systemd-system.conf.xml
index 36f25f94e4f..ac21c31d9aa 100644
--- a/man/systemd-system.conf.xml
+++ b/man/systemd-system.conf.xml
@@ -592,6 +592,18 @@
       </table>
   </refsect1>
 
+  <refsect1>
+      <title>History</title>
+
+      <variablelist>
+        <varlistentry>
+          <term>systemd 252</term>
+          <listitem><para>Option <varname>DefaultBlockIOAccounting=</varname> was deprecated. Please switch
+          to the unified cgroup hierarchy.</para></listitem>
+        </varlistentry>
+      </variablelist>
+  </refsect1>
+
   <refsect1>
       <title>See Also</title>
       <para>
diff --git a/man/systemd.resource-control.xml b/man/systemd.resource-control.xml
index ba4a14440a8..940395a4427 100644
--- a/man/systemd.resource-control.xml
+++ b/man/systemd.resource-control.xml
@@ -1103,6 +1103,31 @@ DeviceAllow=/dev/loop-control
     </variablelist>
   </refsect1>
 
+  <refsect1>
+      <title>History</title>
+
+      <variablelist>
+        <varlistentry>
+          <term>systemd 252</term>
+          <listitem><para> Options for controlling the Legacy Control Group Hierarchy (<ulink
+          url="https://docs.kernel.org/admin-guide/cgroup-v1/index.html">Control Groups version 1</ulink> are
+          now fully deprecated: <varname>CPUShares=<replaceable>weight</replaceable></varname>,
+          <varname>StartupCPUShares=<replaceable>weight</replaceable></varname>,
+          <varname>MemoryLimit=<replaceable>bytes</replaceable></varname>,
+          <varname>BlockIOAccounting=</varname>,
+          <varname>BlockIOWeight=<replaceable>weight</replaceable></varname>,
+          <varname>StartupBlockIOWeight=<replaceable>weight</replaceable></varname>,
+          <varname>BlockIODeviceWeight=<replaceable>device</replaceable>
+          <replaceable>weight</replaceable></varname>,
+          <varname>BlockIOReadBandwidth=<replaceable>device</replaceable>
+          <replaceable>bytes</replaceable></varname>,
+          <varname>BlockIOWriteBandwidth=<replaceable>device</replaceable>
+          <replaceable>bytes</replaceable></varname>.
+          Please switch to the unified cgroup hierarchy.</para></listitem>
+        </varlistentry>
+      </variablelist>
+  </refsect1>
+
   <refsect1>
     <title>See Also</title>
     <para>
diff --git a/man/systemd.xml b/man/systemd.xml
index d19318929ac..99b6f11b908 100644
--- a/man/systemd.xml
+++ b/man/systemd.xml
@@ -1251,6 +1251,19 @@
     </variablelist>
   </refsect1>
 
+  <refsect1>
+      <title>History</title>
+
+      <variablelist>
+        <varlistentry>
+          <term>systemd 252</term>
+          <listitem><para>Kernel command-line arguments <varname>systemd.unified_cgroup_hierarchy</varname>
+          and <varname>systemd.legacy_systemd_cgroup_controller</varname> were deprecated. Please switch to
+          the unified cgroup hierarchy.</para></listitem>
+        </varlistentry>
+      </variablelist>
+  </refsect1>
+
   <refsect1>
     <title>See Also</title>
     <para>