diff --git a/modules/dumbster/src/org/labkey/dumbster/model/DumbsterManager.java b/modules/dumbster/src/org/labkey/dumbster/model/DumbsterManager.java
index b1a4d84ae7..d981349e3a 100644
--- a/modules/dumbster/src/org/labkey/dumbster/model/DumbsterManager.java
+++ b/modules/dumbster/src/org/labkey/dumbster/model/DumbsterManager.java
@@ -17,7 +17,8 @@
 
 import com.dumbster.smtp.SimpleSmtpServer;
 import com.dumbster.smtp.SmtpMessage;
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
 import org.labkey.api.settings.AppProps;
 import org.labkey.api.util.ContextListener;
 import org.labkey.api.util.MailHelper;
@@ -41,7 +42,7 @@
  */
 public class DumbsterManager implements ShutdownListener
 {
-    private static final Logger _log = Logger.getLogger(DumbsterManager.class);
+    private static final Logger _log = LogManager.getLogger(DumbsterManager.class);
 
     private static DumbsterManager instance;
 
diff --git a/modules/linkedschematest/src/org/labkey/linkedschematest/TestLinkedSchemaCustomizer.java b/modules/linkedschematest/src/org/labkey/linkedschematest/TestLinkedSchemaCustomizer.java
index 91126ecd7a..54567ede1f 100644
--- a/modules/linkedschematest/src/org/labkey/linkedschematest/TestLinkedSchemaCustomizer.java
+++ b/modules/linkedschematest/src/org/labkey/linkedschematest/TestLinkedSchemaCustomizer.java
@@ -15,7 +15,8 @@
  */
 package org.labkey.linkedschematest;
 
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
 import org.apache.xmlbeans.SimpleValue;
 import org.apache.xmlbeans.XmlObject;
 import org.jetbrains.annotations.Nullable;
@@ -41,7 +42,7 @@
  */
 public class TestLinkedSchemaCustomizer implements LinkedSchemaCustomizer
 {
-    private static Logger LOG = Logger.getLogger(TestLinkedSchemaCustomizer.class);
+    private static Logger LOG = LogManager.getLogger(TestLinkedSchemaCustomizer.class);
 
     // Name of the parameter declaration
     private static final String PARAM_FAMILY = "PARAM_FAMILY";
diff --git a/modules/linkedschematest/src/org/labkey/linkedschematest/TestTableCustomizer.java b/modules/linkedschematest/src/org/labkey/linkedschematest/TestTableCustomizer.java
index 07b509a760..a59e997d5b 100644
--- a/modules/linkedschematest/src/org/labkey/linkedschematest/TestTableCustomizer.java
+++ b/modules/linkedschematest/src/org/labkey/linkedschematest/TestTableCustomizer.java
@@ -17,7 +17,8 @@
 
 import org.apache.commons.collections4.MultiValuedMap;
 import org.apache.commons.lang3.StringUtils;
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
 import org.labkey.api.data.TableCustomizer;
 import org.labkey.api.data.TableInfo;
 
@@ -26,7 +27,7 @@
 
 public class TestTableCustomizer implements TableCustomizer
 {
-    private static final Logger _log = Logger.getLogger(TestTableCustomizer.class);
+    private static final Logger _log = LogManager.getLogger(TestTableCustomizer.class);
 
     public TestTableCustomizer()
     {