diff --git a/build.gradle.kts b/build.gradle.kts
index 953d840..898c421 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,5 +1,5 @@
 plugins {
-    kotlin("jvm") version "1.8.0"
+    kotlin("jvm") version "1.9.22"
     application
     id("io.gitlab.arturbosch.detekt") version "1.23.3"
 }
@@ -20,7 +20,7 @@ tasks.test {
 }
 
 kotlin {
-    jvmToolchain(11)
+    jvmToolchain(17)
 }
 
 application {
diff --git a/src/main/kotlin/mate/academy/GetCentury.kt b/src/main/kotlin/mate/academy/GetCentury.kt
index 8595cb6..e5cdffe 100644
--- a/src/main/kotlin/mate/academy/GetCentury.kt
+++ b/src/main/kotlin/mate/academy/GetCentury.kt
@@ -1,5 +1,9 @@
 package mate.academy
 
+import kotlin.math.ceil
+
+const val CENTURY = 100
+
 fun getCentury(year: Int) : Int {
-    return 0
+    return ceil(year.toDouble() / CENTURY).toInt()
 }