diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 554f7345..459b9fab 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -65,6 +65,8 @@ dependencies {
 
     // api
     implementation("io.javalin:javalin:3.12.0")
+    implementation("org.slf4j:slf4j-simple:1.8.0-beta4")
+    implementation("org.slf4j:slf4j-api:1.8.0-beta4")
 
 
     testImplementation("org.jetbrains.kotlin:kotlin-test")
diff --git a/app/src/main/kotlin/ir/armor/tachidesk/Main.kt b/app/src/main/kotlin/ir/armor/tachidesk/Main.kt
index ed329aa2..9a79326a 100644
--- a/app/src/main/kotlin/ir/armor/tachidesk/Main.kt
+++ b/app/src/main/kotlin/ir/armor/tachidesk/Main.kt
@@ -75,7 +75,7 @@ class Main {
 
         @JvmStatic
         fun main(args: Array<String>) {
-            val app = Javalin.create().start(7000)
+            val app = Javalin.create().start(4567)
             app["/", { ctx: Context -> ctx.result("Hello World") }]
         }
     }