diff --git a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/client/web/server/resultset/CachedResultSetManagerTest.java b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/client/web/server/resultset/CachedResultSetManagerTest.java
index 838abc9bb63fe8a6411fd77309422ab6906046e4..b1812274e75908ece7d26e7bbd346f3ea645a2d5 100644
--- a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/client/web/server/resultset/CachedResultSetManagerTest.java
+++ b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/client/web/server/resultset/CachedResultSetManagerTest.java
@@ -884,7 +884,7 @@ public final class CachedResultSetManagerTest extends AssertJUnit
         context.assertIsSatisfied();
     }
 
-    @Test
+    @Test(groups = "slow")
     public void testWaitingForFuture()
     {
         List<DataHolder> data = createDataList("a", "b", "c", "d");
diff --git a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/systemtest/BatchMaterialRegistrationAndUpdateTest.java b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/systemtest/BatchMaterialRegistrationAndUpdateTest.java
index ae129392cd36719dbeee46f814ef222685821b79..c16e749b5d65425937c77d40d0578dd5cd05c65f 100644
--- a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/systemtest/BatchMaterialRegistrationAndUpdateTest.java
+++ b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/systemtest/BatchMaterialRegistrationAndUpdateTest.java
@@ -69,7 +69,7 @@ public class BatchMaterialRegistrationAndUpdateTest extends SystemTestCase
         commonClientService.unassignPropertyType(EntityKind.MATERIAL, "COMMENT", MATERIAL_TYPE);
     }
 
-    @Test
+    @Test(groups = "slow")
     public void testBatchRegistrationWithManagedProperty()
     {
         logIntoCommonClientService().getSessionID();
@@ -104,7 +104,7 @@ public class BatchMaterialRegistrationAndUpdateTest extends SystemTestCase
         assertProperties("[COMMENT: a & b, DESCRIPTION: compound 2, SIZE: 43]", "C2");
     }
 
-    @Test
+    @Test(groups = "slow")
     public void testUpdateOfPropertiesOfVariousTypes()
     {
         logIntoCommonClientService();
diff --git a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/systemtest/plugin/generic/ExperimentRegistrationTest.java b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/systemtest/plugin/generic/ExperimentRegistrationTest.java
index 36eebdcb4dd206271fd40ff3085f5f17b9ea6cdd..37314aedef68ecd6c440c617d1bc283cd051ee22 100644
--- a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/systemtest/plugin/generic/ExperimentRegistrationTest.java
+++ b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/systemtest/plugin/generic/ExperimentRegistrationTest.java
@@ -215,7 +215,7 @@ public class ExperimentRegistrationTest extends GenericSystemTestCase
         assertEquals("hello world", new String(attachment.getContent()));
     }
 
-    @Test
+    @Test(groups = "slow")
     public void testBulkUpdateExperiments() throws UnsupportedEncodingException
     {
         logIntoCommonClientService();