diff --git a/app/k9mail/build.gradle b/app/k9mail/build.gradle
index 962cd6fe4..a28469a8b 100644
--- a/app/k9mail/build.gradle
+++ b/app/k9mail/build.gradle
@@ -24,6 +24,8 @@ dependencies {
     implementation "com.jakewharton.timber:timber:${versions.timber}"
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:${versions.kotlinCoroutines}"
 
+    debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.3'
+
     testImplementation "org.robolectric:robolectric:${versions.robolectric}"
     testImplementation "junit:junit:${versions.junit}"
     testImplementation "com.google.truth:truth:${versions.truth}"