diff --git a/build.gradle.kts b/build.gradle.kts
index 89e7bcb..6708264 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -17,12 +17,15 @@ plugins {
 group = "org.javafreedom"
 project.version = project.findProperty("version") as String? ?: "0.0.1-SNAPSHOT"
 
+val kotlinxDatetimeVersion = "0.6.1"
+val konsistVersion = "0.17.3"
+
 dependencies {
-    implementation("org.jetbrains.kotlinx:kotlinx-datetime:0.6.1")
+    implementation("org.jetbrains.kotlinx:kotlinx-datetime:${kotlinxDatetimeVersion}")
 
     testImplementation(kotlin("test"))
 
-    testImplementation("com.lemonappdev:konsist:0.17.3")
+    testImplementation("com.lemonappdev:konsist:${konsistVersion}")
 }
 
 tasks.test {
@@ -41,7 +44,7 @@ val version: String by lazy {
 mavenPublishing {
     println("Using Version: ${version}")
 
-    coordinates(group.toString(), rootProject.name, version)
+    coordinates(groupId = group.toString(), artifactId = rootProject.name, version = version)
 
     publishToMavenCentral(SonatypeHost.CENTRAL_PORTAL)
 
diff --git a/src/main/kotlin/org/javafreedom/khol/KHol.kt b/src/main/kotlin/org/javafreedom/khol/KHol.kt
index 7bd9d83..977732a 100644
--- a/src/main/kotlin/org/javafreedom/khol/KHol.kt
+++ b/src/main/kotlin/org/javafreedom/khol/KHol.kt
@@ -8,7 +8,7 @@ import kotlinx.datetime.LocalDate
 class KHol(private val holidays: HolidayDeclarations, private val validIn: String) {
 
     fun validHolidays(year: Int) : List<LocalDate> {
-        if (year < 1990) throw KHolException()
+        if (year < VALID_START_YEAR) throw KHolException()
 
         val result = mutableListOf<LocalDate>()
 
@@ -32,4 +32,8 @@ class KHol(private val holidays: HolidayDeclarations, private val validIn: Strin
 
         return result
     }
+
+    companion object {
+        const val VALID_START_YEAR = 1990
+    }
 }
diff --git a/src/main/kotlin/org/javafreedom/khol/KHolException.kt b/src/main/kotlin/org/javafreedom/khol/KHolException.kt
index 7ff39f1..2548311 100644
--- a/src/main/kotlin/org/javafreedom/khol/KHolException.kt
+++ b/src/main/kotlin/org/javafreedom/khol/KHolException.kt
@@ -1,4 +1,4 @@
 package org.javafreedom.khol
 
 class KHolException: RuntimeException() {
-}
\ No newline at end of file
+}
diff --git a/src/main/kotlin/org/javafreedom/khol/algorithm/FirstAdvent.kt b/src/main/kotlin/org/javafreedom/khol/algorithm/FirstAdvent.kt
index 3eb92b6..8865b7e 100644
--- a/src/main/kotlin/org/javafreedom/khol/algorithm/FirstAdvent.kt
+++ b/src/main/kotlin/org/javafreedom/khol/algorithm/FirstAdvent.kt
@@ -1,7 +1,9 @@
 @file:Suppress("detekt:style:MagicNumber")
 package org.javafreedom.khol.algorithm
 
-import kotlinx.datetime.*
+import kotlinx.datetime.DateTimeUnit
+import kotlinx.datetime.LocalDate
+import kotlinx.datetime.minus
 import org.javafreedom.khol.BaseCalculationAlgorithm
 
 /**
diff --git a/src/main/kotlin/org/javafreedom/khol/algorithm/OrthodoxEaster.kt b/src/main/kotlin/org/javafreedom/khol/algorithm/OrthodoxEaster.kt
index cfce985..20e7137 100644
--- a/src/main/kotlin/org/javafreedom/khol/algorithm/OrthodoxEaster.kt
+++ b/src/main/kotlin/org/javafreedom/khol/algorithm/OrthodoxEaster.kt
@@ -1,3 +1,4 @@
+@file:Suppress("detekt:style:MagicNumber")
 package org.javafreedom.khol.algorithm
 
 import kotlinx.datetime.DateTimeUnit
diff --git a/src/test/kotlin/org/javafreedom/khol/KonsistTest.kt b/src/test/kotlin/org/javafreedom/khol/KonsistTest.kt
index b52f885..80884ae 100644
--- a/src/test/kotlin/org/javafreedom/khol/KonsistTest.kt
+++ b/src/test/kotlin/org/javafreedom/khol/KonsistTest.kt
@@ -40,6 +40,6 @@ internal class KonsistTest {
     }
 
     companion object {
-        val BASE_PACKAGE = "org.javafreedom.khol"
+        const val BASE_PACKAGE = "org.javafreedom.khol"
     }
-}
\ No newline at end of file
+}