diff --git a/config.xml b/config.xml
index 257742fd04ff87896028e99d3a6d97426bec4ee8..9b5c02c8e42a59abd7379c9cb4667b54a89ad2dd 100644
--- a/config.xml
+++ b/config.xml
@@ -208,11 +208,30 @@
     <permission>org.jenkins.plugins.lockableresources.LockableResourcesManager.Unlock:scott</permission>
     <permission>org.jenkins.plugins.lockableresources.LockableResourcesManager.View:20180082</permission>
   </authorizationStrategy>
-  <securityRealm class="org.jenkinsci.plugins.GitLabSecurityRealm">
-    <gitlabWebUri>https://cm.ylhealth.org/gitlab/</gitlabWebUri>
-    <gitlabApiUri>https://cm.ylhealth.org/gitlab/</gitlabApiUri>
-    <clientID>1c401a121b99936cfcb529c4be69bc72006b1affca5e9b3d62dabb3f4a7eefa4</clientID>
-    <clientSecret>af52a540279ced56081907914129900aa26c6640baad0a83871b885a921ee9e8</clientSecret>
+  <securityRealm class="hudson.security.LDAPSecurityRealm" plugin="ldap@1.21">
+    <disableMailAddressResolver>false</disableMailAddressResolver>
+    <configurations>
+      <jenkins.security.plugins.ldap.LDAPConfiguration>
+        <server>10.57.117.135</server>
+        <rootDN>dc=ylhealth,dc=org</rootDN>
+        <inhibitInferRootDN>false</inhibitInferRootDN>
+        <userSearchBase>ou=People</userSearchBase>
+        <userSearch>uid={0}</userSearch>
+        <groupSearchBase>ou=Group</groupSearchBase>
+        <groupSearchFilter>cn={0}</groupSearchFilter>
+        <groupMembershipStrategy class="jenkins.security.plugins.ldap.FromGroupSearchLDAPGroupMembershipStrategy">
+          <filter>(memberUid={1})</filter>
+        </groupMembershipStrategy>
+        <managerDN>cn=Manager,dc=ylhealth,dc=org</managerDN>
+        <managerPasswordSecret>{AQAAABAAAAAQ7I04xrqTdeHukr9MbhSMADlIXclqquOKmziX5YyRgyk=}</managerPasswordSecret>
+        <displayNameAttributeName>displayname</displayNameAttributeName>
+        <mailAddressAttributeName>mail</mailAddressAttributeName>
+        <ignoreIfUnavailable>false</ignoreIfUnavailable>
+      </jenkins.security.plugins.ldap.LDAPConfiguration>
+    </configurations>
+    <userIdStrategy class="jenkins.model.IdStrategy$CaseInsensitive"/>
+    <groupIdStrategy class="jenkins.model.IdStrategy$CaseInsensitive"/>
+    <disableRolePrefixing>true</disableRolePrefixing>
   </securityRealm>
   <disableRememberMe>false</disableRememberMe>
   <projectNamingStrategy class="jenkins.model.ProjectNamingStrategy$DefaultProjectNamingStrategy"/>