diff --git a/office/misc/mdds/pspec.xml b/office/misc/mdds/pspec.xml
index 1e9854060a..08aeb15bbd 100644
--- a/office/misc/mdds/pspec.xml
+++ b/office/misc/mdds/pspec.xml
@@ -13,7 +13,7 @@
         <IsA>app:gui</IsA>
         <Summary>Multi-dimensional data index algorithm</Summary>
         <Description>A collection of multi-dimensional data structure and indexing algorithm.</Description>
-        <Archive sha1sum="3d2e5fc0e00650cdd3c385ebacacb15bd364ea4f" type="tarbz2">http://kohei.us/files/mdds/src/mdds-1.2.2.tar.bz2</Archive>
+        <Archive sha1sum="54a4691715a694dce2029fb8be34ca44e006954f" type="tarbz2">http://kohei.us/files/mdds/src/mdds-1.3.1.tar.bz2</Archive>
         <BuildDependencies>
             <Dependency>boost-devel</Dependency>
         </BuildDependencies>
@@ -42,6 +42,13 @@
     </Package>
 
     <History>
+        <Update release="3">
+            <Date>2018-02-11</Date>
+            <Version>1.3.1</Version>
+            <Comment>Version Bump.</Comment>
+            <Name>Pisi Linux Community</Name>
+            <Email>admin@pisilinux.org</Email>
+        </Update>
         <Update release="2">
             <Date>2017-04-11</Date>
             <Version>1.2.2</Version>