diff --git a/core/constant_inc.php b/core/constant_inc.php
index d546172530..64a60cdd25 100644
--- a/core/constant_inc.php
+++ b/core/constant_inc.php
@@ -21,7 +21,7 @@
 /**
  * Mantis Version
  */
-define( 'MANTIS_VERSION', '1.3.19' );
+define( 'MANTIS_VERSION', '1.3.20' );
 define( 'FILTER_VERSION', 'v9' );
 
 # --- constants -------------------
diff --git a/docbook/Admin_Guide/en-US/Revision_History.xml b/docbook/Admin_Guide/en-US/Revision_History.xml
index b523956d9d..0734769032 100644
--- a/docbook/Admin_Guide/en-US/Revision_History.xml
+++ b/docbook/Admin_Guide/en-US/Revision_History.xml
@@ -5,6 +5,20 @@
 	<title>Revision History</title>
 	<simpara>
 		<revhistory>
+			<revision>
+				<revnumber>1.3-31</revnumber>
+				<date>Thu Sep 26 2019</date>
+				<author>
+					<firstname>Victor</firstname>
+					<surname>Boctor</surname>
+					<email>vboctor@mantisbt.org</email>
+				</author>
+				<revdescription>
+					<simplelist>
+						<member>Release 1.3.20</member>
+					</simplelist>
+				</revdescription>
+			</revision>
 			<revision>
 				<revnumber>1.3-30</revnumber>
 				<date>Sat Aug 31 2019</date>
diff --git a/docbook/Developers_Guide/en-US/Revision_History.xml b/docbook/Developers_Guide/en-US/Revision_History.xml
index 4fb227d0aa..291f9037a7 100644
--- a/docbook/Developers_Guide/en-US/Revision_History.xml
+++ b/docbook/Developers_Guide/en-US/Revision_History.xml
@@ -7,6 +7,20 @@
 	<title>Revision History</title>
 	<simpara>
 		<revhistory>
+			<revision>
+				<revnumber>1.3-31</revnumber>
+				<date>Thu Sep 26 2019</date>
+				<author>
+					<firstname>Victor</firstname>
+					<surname>Boctor</surname>
+					<email>vboctor@mantisbt.org</email>
+				</author>
+				<revdescription>
+					<simplelist>
+						<member>Release 1.3.20</member>
+					</simplelist>
+				</revdescription>
+			</revision>
 			<revision>
 				<revnumber>1.3-30</revnumber>
 				<date>Sat Aug 31 2019</date>