diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 1359d8baf761..4d5e59bc7497 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -8,13 +8,13 @@ de-mannodermaus-junit5 = "1.7.0"
 graalvm = "24.1.1"
 junit-platform = "1.12.1"
 kotlinx-serialization = "1.8.1"
-ksp = "2.1.0-1.0.29"
+ksp = "2.1.20-1.0.31"
 lintGradle = "1.0.0-alpha03"
 mockserverClient = "5.15.0"
 org-bouncycastle = "1.80"
 org-conscrypt = "2.5.2"
 org-jetbrains-coroutines = "1.10.2"
-org-jetbrains-kotlin = "2.1.10"
+org-jetbrains-kotlin = "2.1.20"
 org-junit-jupiter = "5.12.1"
 retrofit = "2.11.0"
 startupRuntime = "1.2.0"
diff --git a/samples/guide/build.gradle.kts b/samples/guide/build.gradle.kts
index be8a0003d563..5c02099aa1aa 100644
--- a/samples/guide/build.gradle.kts
+++ b/samples/guide/build.gradle.kts
@@ -1,6 +1,6 @@
 plugins {
   kotlin("jvm")
-  kotlin("kapt")
+  id("com.google.devtools.ksp").version(libs.versions.ksp)
 }
 
 dependencies {
@@ -11,7 +11,7 @@ dependencies {
   implementation(libs.animalsniffer.annotations)
   implementation(libs.squareup.moshi)
   implementation(libs.squareup.okio.fakefilesystem)
-  kapt(libs.squareup.moshi.compiler)
+  ksp(libs.squareup.moshi.compiler)
 }
 
 java {