diff --git a/build.gradle.kts b/build.gradle.kts
index 71643d2..a62f109 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -71,7 +71,7 @@ dependencies {
     implementation("org.leadpony.justify:justify:3.1.0")
 
     implementation("dev.harrel:json-schema:1.8.1")
-    implementation("com.sanctionco.jmail:jmail:1.6.3") // dev.harrel format validation
+    implementation("com.sanctionco.jmail:jmail:2.0.0") // dev.harrel format validation
 
     runtimeOnly("org.slf4j:slf4j-nop:2.0.17")