diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index f6e10db0..d7795d87 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,6 +1,6 @@
 [versions]
 kotest = "5.8.1"
-kafka = "3.7.0"
+kafka = "4.0.0"
 kotlin = "2.0.0-RC2"
 kotlinx-coroutines = "1.8.0"
 dokka = "2.0.0"
diff --git a/guide/build.gradle.kts b/guide/build.gradle.kts
index 3b3c0bae..4e65b074 100644
--- a/guide/build.gradle.kts
+++ b/guide/build.gradle.kts
@@ -9,7 +9,7 @@ repositories {
 dependencies {
   implementation(rootProject)
   implementation(libs.testcontainers.kafka)
-  implementation("io.arrow-kt:suspendapp:0.4.0")
+  implementation("io.arrow-kt:suspendapp:2.1.1")
   testImplementation("org.jetbrains.kotlin:kotlin-test-junit")
   testImplementation("org.jetbrains.kotlinx:kotlinx-knit-test:0.5.0")
 }