diff --git a/core/constant_inc.php b/core/constant_inc.php
index 3df7271fe2..620a96b2ca 100644
--- a/core/constant_inc.php
+++ b/core/constant_inc.php
@@ -21,7 +21,7 @@
 /**
  * Mantis Version
  */
-define( 'MANTIS_VERSION', '1.3.14' );
+define( 'MANTIS_VERSION', '1.3.15' );
 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 c5b6d6e91f..6f0ac19a64 100644
--- a/docbook/Admin_Guide/en-US/Revision_History.xml
+++ b/docbook/Admin_Guide/en-US/Revision_History.xml
@@ -5,9 +5,23 @@
 	<title>Revision History</title>
 	<simpara>
 		<revhistory>
+			<revision>
+				<revnumber>1.3-26</revnumber>
+				<date>Sun Apr 29 2018</date>
+				<author>
+					<firstname>Victor</firstname>
+					<surname>Boctor</surname>
+					<email>vboctor@mantisbt.org</email>
+				</author>
+				<revdescription>
+					<simplelist>
+						<member>Release 1.3.15</member>
+					</simplelist>
+				</revdescription>
+			</revision>
 			<revision>
 				<revnumber>1.3-25</revnumber>
-				<date>Tue Feb 6 2017</date>
+				<date>Tue Feb 6 2018</date>
 				<author>
 					<firstname>Victor</firstname>
 					<surname>Boctor</surname>
diff --git a/docbook/Developers_Guide/en-US/Revision_History.xml b/docbook/Developers_Guide/en-US/Revision_History.xml
index 95cddca084..ed3a57f0ce 100644
--- a/docbook/Developers_Guide/en-US/Revision_History.xml
+++ b/docbook/Developers_Guide/en-US/Revision_History.xml
@@ -7,9 +7,23 @@
 	<title>Revision History</title>
 	<simpara>
 		<revhistory>
+			<revision>
+				<revnumber>1.3-26</revnumber>
+				<date>Sun Apr 29 2018</date>
+				<author>
+					<firstname>Victor</firstname>
+					<surname>Boctor</surname>
+					<email>vboctor@mantisbt.org</email>
+				</author>
+				<revdescription>
+					<simplelist>
+						<member>Release 1.3.15</member>
+					</simplelist>
+				</revdescription>
+			</revision>
 			<revision>
 				<revnumber>1.3-25</revnumber>
-				<date>Tue Feb 6 2017</date>
+				<date>Tue Feb 6 2018</date>
 				<author>
 					<firstname>Victor</firstname>
 					<surname>Boctor</surname>