diff --git a/SequenceNum/module.properties b/SequenceNum/module.properties
index bcecf673..48fda9b0 100644
--- a/SequenceNum/module.properties
+++ b/SequenceNum/module.properties
@@ -4,3 +4,5 @@ Description: For backwards compatibility with R views and exports, replaces \
     the newer ParticipantVisit/Visit column in dataset grids with SequenceNum.
 License: Apache 2.0
 LicenseURL: http://www.apache.org/licenses/LICENSE-2.0
+SupportedDatabases: pgsql
+
diff --git a/atlastools/module.properties b/atlastools/module.properties
index 7cff41e8..08f05170 100644
--- a/atlastools/module.properties
+++ b/atlastools/module.properties
@@ -1,2 +1,3 @@
 Name: atlastools
 RequiredServerVersion: 12.20
+SupportedDatabases: pgsql
diff --git a/customLogin/module.properties b/customLogin/module.properties
index fe4648cb..d631f77a 100644
--- a/customLogin/module.properties
+++ b/customLogin/module.properties
@@ -4,3 +4,5 @@ Description: Provides a custom login page that's identical to the standard login
     Look and Feel Settings -> Alternative login page to "customLogin-login"
 License: Apache 2.0
 LicenseURL: https://www.apache.org/licenses/LICENSE-2.0
+SupportedDatabases: pgsql
+
diff --git a/hvtnFlow/module.properties b/hvtnFlow/module.properties
index 0774a0ae..ffb98ca7 100644
--- a/hvtnFlow/module.properties
+++ b/hvtnFlow/module.properties
@@ -1,3 +1,4 @@
 Name: hvtnFlow
 RequiredServerVersion: 10.20
+SupportedDatabases: pgsql
 
diff --git a/viscstudies/module.properties b/viscstudies/module.properties
index 4d0b78f1..dd44d96a 100644
--- a/viscstudies/module.properties
+++ b/viscstudies/module.properties
@@ -1 +1,2 @@
 ModuleClass: org.labkey.viscstudies.ViscStudiesModule
+SupportedDatabases: pgsql
diff --git a/viscstudies/test/src/org/labkey/test/tests/viscstudies/CAVDStudyTest.java b/viscstudies/test/src/org/labkey/test/tests/viscstudies/CAVDStudyTest.java
index 4ff2950b..4ca4c2a4 100644
--- a/viscstudies/test/src/org/labkey/test/tests/viscstudies/CAVDStudyTest.java
+++ b/viscstudies/test/src/org/labkey/test/tests/viscstudies/CAVDStudyTest.java
@@ -36,6 +36,7 @@
 import org.labkey.test.util.LoggedParam;
 import org.labkey.test.util.OptionalFeatureHelper;
 import org.labkey.test.util.PortalHelper;
+import org.labkey.test.util.PostgresOnlyTest;
 import org.labkey.test.util.StudyHelper;
 
 import java.io.File;
@@ -53,7 +54,7 @@
 
 @Category({CustomModules.class})
 @BaseWebDriverTest.ClassTimeout(minutes = 20)
-public class CAVDStudyTest extends StudyBaseTest
+public class CAVDStudyTest extends StudyBaseTest implements PostgresOnlyTest
 {
     private static final String PROJECT_NAME = "CAVDStudyTest Project";
     private static final String FOLDER_NAME = "CAVDStudyTest Folder";