diff --git a/build.gradle b/build.gradle
index 6f274e1d9..2886725f8 100644
--- a/build.gradle
+++ b/build.gradle
@@ -146,6 +146,11 @@ subprojects {
                 }
             }
         }
+
+        configurations.all {
+            exclude group: "org.slf4j", module: "slf4j-log4j12"
+            exclude group: "log4j", module: "log4j"
+        }
     }
 
     signing {
diff --git a/elastic/src/main/java/org/openmbee/mms/elastic/services/ElasticSearchService.java b/elastic/src/main/java/org/openmbee/mms/elastic/services/ElasticSearchService.java
index 3e9e1b1d3..a6367a6b7 100644
--- a/elastic/src/main/java/org/openmbee/mms/elastic/services/ElasticSearchService.java
+++ b/elastic/src/main/java/org/openmbee/mms/elastic/services/ElasticSearchService.java
@@ -1,7 +1,7 @@
 package org.openmbee.mms.elastic.services;
 
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.elasticsearch.action.fieldcaps.FieldCapabilities;
 import org.elasticsearch.action.fieldcaps.FieldCapabilitiesRequest;
 import org.elasticsearch.action.fieldcaps.FieldCapabilitiesResponse;
@@ -37,7 +37,7 @@
 
 @Service
 public class ElasticSearchService implements SearchService {
-    private final Logger logger = LogManager.getLogger(getClass());
+    private final Logger logger = LoggerFactory.getLogger(getClass());
 
     @Value("${elasticsearch.limit.result}")
     protected int resultLimit;
diff --git a/twc/src/main/java/org/openmbee/mms/twc/config/TwcAuthSecurityConfig.java b/twc/src/main/java/org/openmbee/mms/twc/config/TwcAuthSecurityConfig.java
index 95e041c0b..29c6f7e72 100644
--- a/twc/src/main/java/org/openmbee/mms/twc/config/TwcAuthSecurityConfig.java
+++ b/twc/src/main/java/org/openmbee/mms/twc/config/TwcAuthSecurityConfig.java
@@ -1,7 +1,7 @@
 package org.openmbee.mms.twc.config;
 
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.openmbee.mms.twc.security.TwcAuthenticationFilter;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -16,7 +16,7 @@
 @EnableWebSecurity
 @EnableTransactionManagement
 public class TwcAuthSecurityConfig {
-    private static Logger logger = LogManager.getLogger(TwcAuthSecurityConfig.class);
+    private static Logger logger = LoggerFactory.getLogger(TwcAuthSecurityConfig.class);
 
     public void setAuthConfig(HttpSecurity http) throws Exception {
         http.addFilterBefore(twcAuthenticationFilter(), UsernamePasswordAuthenticationFilter.class);