diff --git a/integration/admin-client/src/main/java/org/keycloak/admin/client/resource/RealmResource.java b/integration/admin-client/src/main/java/org/keycloak/admin/client/resource/RealmResource.java
index 0ecb18ba29..fa7309ab90 100644
--- a/integration/admin-client/src/main/java/org/keycloak/admin/client/resource/RealmResource.java
+++ b/integration/admin-client/src/main/java/org/keycloak/admin/client/resource/RealmResource.java
@@ -2,8 +2,10 @@ package org.keycloak.admin.client.resource;
 
 import org.keycloak.representations.idm.RealmRepresentation;
 
+import javax.ws.rs.Consumes;
 import javax.ws.rs.DELETE;
 import javax.ws.rs.GET;
+import javax.ws.rs.PUT;
 import javax.ws.rs.Path;
 import javax.ws.rs.Produces;
 import javax.ws.rs.core.MediaType;
@@ -17,6 +19,10 @@ public interface RealmResource {
     @Produces(MediaType.APPLICATION_JSON)
     public RealmRepresentation toRepresentation();
 
+    @PUT
+    @Consumes(MediaType.APPLICATION_JSON)
+    public void update(RealmRepresentation realmRepresentation);
+
     @Path("applications")
     public ApplicationsResource applications();
 
diff --git a/testsuite/integration/src/test/java/org/keycloak/testsuite/admin/RealmTest.java b/testsuite/integration/src/test/java/org/keycloak/testsuite/admin/RealmTest.java
index b0a7c8f668..d3bbca982e 100644
--- a/testsuite/integration/src/test/java/org/keycloak/testsuite/admin/RealmTest.java
+++ b/testsuite/integration/src/test/java/org/keycloak/testsuite/admin/RealmTest.java
@@ -46,6 +46,20 @@ public class RealmTest extends AbstractClientTest {
         assertNames(keycloak.realms().findAll(), "master", "test");
     }
 
+    @Test
+    public void updateRealm() {
+        RealmRepresentation rep = realm.toRepresentation();
+        rep.setSsoSessionIdleTimeout(123);
+        rep.setSsoSessionMaxLifespan(12);
+
+        realm.update(rep);
+
+        rep = realm.toRepresentation();
+
+        assertEquals(123, rep.getSsoSessionIdleTimeout().intValue());
+        assertEquals(12, rep.getSsoSessionMaxLifespan().intValue());
+    }
+
     @Test
     public void getRealmRepresentation() {
         RealmRepresentation rep = realm.toRepresentation();