diff --git a/build.gradle b/build.gradle
index ee87cf1..a7b789e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -17,8 +17,8 @@ repositories {
 dependencies {
     compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
     compile 'io.javalin:javalin:2.6.0'
-    compile 'org.slf4j:slf4j-simple:1.7.25'
-    implementation 'com.beust:klaxon:5.0.1'
+    compile "org.slf4j:slf4j-log4j12:1.7.7"
+    compile 'com.beust:klaxon:5.0.1'
     testCompile group: 'junit', name: 'junit', version: '4.12'
 }
 
diff --git a/src/main/resources/log4j.properties b/src/main/resources/log4j.properties
new file mode 100644
index 0000000..78132de
--- /dev/null
+++ b/src/main/resources/log4j.properties
@@ -0,0 +1,9 @@
+log4j.rootLogger=INFO, rollingFile
+
+log4j.appender.rollingFile=org.apache.log4j.RollingFileAppender
+log4j.appender.rollingFile.File=application.log
+log4j.appender.rollingFile.layout=org.apache.log4j.PatternLayout
+log4j.appender.rollingFile.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %m%n
+log4j.appender.rollingFile.MaxFileSize=10MB
+log4j.appender.rollingFile.MaxBackupIndex=5
+log4j.appender.rollingFile.append=true
\ No newline at end of file