diff --git a/build.gradle.kts b/build.gradle.kts
index 9d26cf51..be971ec8 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -13,6 +13,7 @@ buildscript {
 plugins {
     alias(libs.plugins.android.application)
     alias(libs.plugins.kotlin.android)
+    alias(libs.plugins.kotlin.kapt)
     alias(libs.plugins.dependencyLicenseReport)
 }
 
@@ -183,7 +184,7 @@ dependencies {
     implementation(libs.bcpkix.jdk15on) //For SSL certificate generation
 
     implementation(libs.classindex)
-    annotationProcessor(libs.classindex)
+    kapt(libs.classindex)
 
     // The android-smsmms library is the only way I know to handle MMS in Android
     // (Shouldn't a phone OS make phone things easy?)
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index a96d9462..9d9aa3db 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -88,4 +88,5 @@ slf4j-handroid = { group = "com.gitlab.mvysny.slf4j", name = "slf4j-handroid", v
 [plugins]
 android-application = { id = "com.android.application", version.ref = "androidGradlePlugin" }
 kotlin-android = { id ="org.jetbrains.kotlin.android", version.ref = "kotlin" }
+kotlin-kapt = { id = "org.jetbrains.kotlin.kapt", version.ref = "kotlin" }
 dependencyLicenseReport = { id = "com.github.jk1.dependency-license-report", version.ref = "dependencyLicenseReport" }