diff --git a/core/screenshot-testing/build.gradle.kts b/core/screenshot-testing/build.gradle.kts
index 051902665..6b855238d 100644
--- a/core/screenshot-testing/build.gradle.kts
+++ b/core/screenshot-testing/build.gradle.kts
@@ -17,6 +17,10 @@ plugins {
     alias(libs.plugins.nowinandroid.kmp.library)
 }
 
+android {
+    namespace = "com.google.samples.apps.nowinandroid.core.screenshottesting"
+}
+
 kotlin {
     sourceSets {
         androidMain.dependencies {
diff --git a/sync/sync-test/build.gradle.kts b/sync/sync-test/build.gradle.kts
index f9ae4df21..a864d05be 100644
--- a/sync/sync-test/build.gradle.kts
+++ b/sync/sync-test/build.gradle.kts
@@ -18,6 +18,10 @@ plugins {
     alias(libs.plugins.nowinandroid.di.koin)
 }
 
+android {
+    namespace = "com.google.samples.apps.nowinandroid.core.sync.test"
+}
+
 dependencies {
     implementation(projects.core.data)
     implementation(projects.sync.work)