diff --git a/CHANGES b/CHANGES
index d0363f7c3b..4b34fbe110 100644
--- a/CHANGES
+++ b/CHANGES
@@ -17,6 +17,9 @@ AMI
  * A new ContactStatus event has been added that reflects res_pjsip contact
    lifecycle changes:  Created, Removed, Reachable, Unreachable, Unknown.
 
+ * Added the Linkedid header to the common channel headers listed for each
+   channel in AMI events.
+
 res_pjsip
 ------------------
 * A new 'g726_non_standard' endpoint option has been added that, when set to
diff --git a/UPGRADE.txt b/UPGRADE.txt
index a78822b20a..7824823ea4 100644
--- a/UPGRADE.txt
+++ b/UPGRADE.txt
@@ -21,6 +21,13 @@
 === UPGRADE-12.txt  -- Upgrade info for 11 to 12
 ===========================================================
 
+From 13.4.0 to 13.5.0:
+
+AMI:
+ - The version of AMI has been bumped to 2.8.0 to account for backwards
+   compatible features included with this release.  See CHANGES for more
+   information.
+
 From 13.3.0 to 13.4.0:
 
 Source Control:
diff --git a/doc/appdocsxml.xslt b/doc/appdocsxml.xslt
index 8cbeaa3a52..6e4c5ac500 100644
--- a/doc/appdocsxml.xslt
+++ b/doc/appdocsxml.xslt
@@ -98,6 +98,12 @@
                 <xsl:value-of select="concat(@prefix,'Uniqueid')"/>
             </xsl:attribute>
         </xsl:element>
+        <xsl:element name="parameter">
+            <xsl:attribute name="name">
+                <xsl:value-of select="concat(@prefix,'Linkedid')"/>
+            </xsl:attribute>
+            <para>Uniqueid of the oldest channel associated with this channel.</para>
+        </xsl:element>
     </xsl:template>
 
     <xsl:template match="bridge_snapshot">
diff --git a/include/asterisk/manager.h b/include/asterisk/manager.h
index 43031d1d63..b5ede545e4 100644
--- a/include/asterisk/manager.h
+++ b/include/asterisk/manager.h
@@ -54,7 +54,7 @@
 - \ref manager.c Main manager code file
  */
 
-#define AMI_VERSION                     "2.7.0"
+#define AMI_VERSION                     "2.8.0"
 #define DEFAULT_MANAGER_PORT 5038	/* Default port for Asterisk management via TCP */
 #define DEFAULT_MANAGER_TLS_PORT 5039	/* Default port for Asterisk management via TCP */
 
diff --git a/main/manager_channels.c b/main/manager_channels.c
index 552adc763e..adef639e88 100644
--- a/main/manager_channels.c
+++ b/main/manager_channels.c
@@ -435,7 +435,8 @@ struct ast_str *ast_manager_build_channel_state_string_prefix(
 		"%sContext: %s\r\n"
 		"%sExten: %s\r\n"
 		"%sPriority: %d\r\n"
-		"%sUniqueid: %s\r\n",
+		"%sUniqueid: %s\r\n"
+		"%sLinkedid: %s\r\n",
 		prefix, snapshot->name,
 		prefix, snapshot->state,
 		prefix, ast_state2str(snapshot->state),
@@ -448,7 +449,8 @@ struct ast_str *ast_manager_build_channel_state_string_prefix(
 		prefix, snapshot->context,
 		prefix, snapshot->exten,
 		prefix, snapshot->priority,
-		prefix, snapshot->uniqueid);
+		prefix, snapshot->uniqueid,
+		prefix, snapshot->linkedid);
 
 	if (!res) {
 		ast_free(out);