diff --git a/android/app/build.gradle.kts b/android/app/build.gradle.kts
index ce912a70..4502eab1 100644
--- a/android/app/build.gradle.kts
+++ b/android/app/build.gradle.kts
@@ -157,6 +157,9 @@ dependencies {
     testImplementation(libs.mockk)
     testImplementation(libs.kotlinx.coroutines.test)
     testImplementation(libs.okhttp.mockwebserver)
+    // kotlin.test for assertEquals/assertNull/etc. — version managed by
+    // the applied Kotlin plugin so no explicit version pin needed.
+    testImplementation(kotlin("test"))
 
     androidTestImplementation(platform(libs.compose.bom))
     androidTestImplementation(libs.compose.ui.test)