diff --git a/uhabits-server/build.gradle.kts b/uhabits-server/build.gradle.kts
index 00dd57706..c022dc3a9 100644
--- a/uhabits-server/build.gradle.kts
+++ b/uhabits-server/build.gradle.kts
@@ -25,6 +25,10 @@ plugins {
     id("com.github.johnrengelman.shadow") version "7.1.2"
 }
 
+kotlin {
+    jvmToolchain(17)
+}
+
 
 application {
     group = "org.isoron.uhabits"
@@ -57,3 +61,4 @@ tasks.withType<ShadowJar> {
     archiveClassifier.set("")
     archiveVersion.set("")
 }
+