diff --git a/SeedDMS_Core/Core/inc.ClassDMS.php b/SeedDMS_Core/Core/inc.ClassDMS.php
index e261466ec..2e4d7368c 100644
--- a/SeedDMS_Core/Core/inc.ClassDMS.php
+++ b/SeedDMS_Core/Core/inc.ClassDMS.php
@@ -1959,8 +1959,9 @@ class SeedDMS_Core_DMS {
 	 */
 	function search($query, $limit=0, $offset=0, $logicalmode='AND', $searchin=array(), $startFolder=null, $owner=null, $status = array(), $creationstartdate=array(), $creationenddate=array(), $modificationstartdate=array(), $modificationenddate=array(), $categories=array(), $attributes=array(), $mode=0x3, $expirationstartdate=array(), $expirationenddate=array(), $reception=array()) { /* {{{ */
 		$orderby = '';
+		$revisionstartdate = $revisionenddate = '';
 		if(is_array($query)) {
-			foreach(array('limit', 'offset', 'logicalmode', 'searchin', 'startFolder', 'owner', 'status', 'creationstartdate', 'creationenddate', 'modificationstartdate', 'modificationenddate', 'categories', 'attributes', 'mode', 'expirationstartdate', 'expirationenddate', 'reception') as $paramname)
+			foreach(array('limit', 'offset', 'logicalmode', 'searchin', 'startFolder', 'owner', 'status', 'creationstartdate', 'creationenddate', 'modificationstartdate', 'modificationenddate', 'categories', 'attributes', 'mode', 'revisionstartdate', 'revisionenddate', 'expirationstartdate', 'expirationenddate', 'reception') as $paramname)
 				${$paramname} = isset($query[$paramname]) ? $query[$paramname] : ${$paramname};
 			foreach(array('orderby') as $paramname)
 				${$paramname} = isset($query[$paramname]) ? $query[$paramname] : '';
@@ -2264,6 +2265,23 @@ class SeedDMS_Core_DMS {
 					$searchCreateDate .= "`tblDocumentContent`.`date` <= ".$stopdate;
 				}
 			}
+			$searchRevisionDate = "";
+			if ($revisionstartdate) {
+				$startdate = $revisionstartdate['year'].'-'.$revisionstartdate["month"].'-'.$revisionstartdate["day"];
+				if ($startdate) {
+					if($searchRevisionDate)
+						$searchRevisionDate .= " AND ";
+					$searchRevisionDate .= "`tblDocumentContent`.`revisiondate` >= '".$startdate."'";
+				}
+			}
+			if ($revisionenddate) {
+				$stopdate = $revisionenddate["year"].'-'.$revisionenddate["month"].'-'.$revisionenddate["day"];
+				if ($stopdate) {
+					if($searchRevisionDate)
+						$searchRevisionDate .= " AND ";
+					$searchRevisionDate .= "`tblDocumentContent`.`revisiondate` <= '".$stopdate."'";
+				}
+			}
 			$searchExpirationDate = '';
 			if ($expirationstartdate) {
 				$startdate = SeedDMS_Core_DMS::makeTimeStamp($expirationstartdate['hour'], $expirationstartdate['minute'], $expirationstartdate['second'], $expirationstartdate['year'], $expirationstartdate["month"], $expirationstartdate["day"]);
@@ -2330,6 +2348,9 @@ class SeedDMS_Core_DMS {
 			if (strlen($searchCreateDate)>0) {
 				$searchQuery .= " AND (".$searchCreateDate.")";
 			}
+			if (strlen($searchRevisionDate)>0) {
+				$searchQuery .= " AND (".$searchRevisionDate.")";
+			}
 			if (strlen($searchExpirationDate)>0) {
 				$searchQuery .= " AND (".$searchExpirationDate.")";
 			}
@@ -2363,7 +2384,7 @@ class SeedDMS_Core_DMS {
 				}
 			}
 
-			if($searchKey || $searchOwner || $searchCategories || $searchCreateDate || $searchExpirationDate || $searchAttributes || $status || $reception) {
+			if($searchKey || $searchOwner || $searchCategories || $searchCreateDate || $searchRevisionDate || $searchExpirationDate || $searchAttributes || $status || $reception) {
 				// Count the number of rows that the search will produce.
 				$resArr = $this->db->getResultArray("SELECT COUNT(*) AS num FROM (SELECT DISTINCT `tblDocuments`.`id` ".$searchQuery.") a");
 				$totalDocs = 0;
diff --git a/SeedDMS_Core/package.xml b/SeedDMS_Core/package.xml
index 91c7d489c..7e6aecfc9 100644
--- a/SeedDMS_Core/package.xml
+++ b/SeedDMS_Core/package.xml
@@ -24,7 +24,7 @@
  </stability>
  <license uri="http://opensource.org/licenses/gpl-license">GPL License</license>
  <notes>
-- no changes, just keep same version as seeddms application
+- add searching for revision date
  </notes>
  <contents>
   <dir baseinstalldir="SeedDMS" name="/">