diff --git a/buildSrc/src/main/groovy/com/google/firebase/gradle/plugins/FirebaseLibraryPlugin.java b/buildSrc/src/main/groovy/com/google/firebase/gradle/plugins/FirebaseLibraryPlugin.java
index 5950a5477dd..522065eab14 100644
--- a/buildSrc/src/main/groovy/com/google/firebase/gradle/plugins/FirebaseLibraryPlugin.java
+++ b/buildSrc/src/main/groovy/com/google/firebase/gradle/plugins/FirebaseLibraryPlugin.java
@@ -20,7 +20,6 @@
 import com.google.firebase.gradle.plugins.ci.device.FirebaseTestServer;
 import org.gradle.api.Plugin;
 import org.gradle.api.Project;
-import org.gradle.api.tasks.bundling.Jar;
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile;
 
 public class FirebaseLibraryPlugin implements Plugin<Project> {
@@ -33,6 +32,28 @@ public void apply(Project project) {
 
     LibraryExtension android = project.getExtensions().getByType(LibraryExtension.class);
 
+    // In the case of and android library signing config only affects instrumentation test APK.
+    // We need it signed with default debug credentials in order for FTL to accept the APK.
+    android.buildTypes(
+        types ->
+            types
+                .getByName("release")
+                .setSigningConfig(types.getByName("debug").getSigningConfig()));
+
+    // skip debug tests in CI
+    // TODO(vkryachko): provide ability for teams to control this if needed
+    if (System.getenv().containsKey("FIREBASE_CI")) {
+      android.setTestBuildType("release");
+      project
+          .getTasks()
+          .all(
+              task -> {
+                if ("testDebugUnitTest".equals(task.getName())) {
+                  task.setEnabled(false);
+                }
+              });
+    }
+
     android.testServer(new FirebaseTestServer(project, firebaseLibrary.testLab));
 
     // reduce the likelihood of kotlin module files colliding.
diff --git a/root-project.gradle b/root-project.gradle
index 7ee1e9d0401..664cce0efd9 100644
--- a/root-project.gradle
+++ b/root-project.gradle
@@ -140,38 +140,6 @@ configure(subprojects) {
     }
 }
 
-/**
- * Disable "debug" build type for all subprojects.
- *
- * They are identical to "release" and are not used in either release or smoke tests. Disabling them
- * to reduce the number of tests we run on pre/post-submit.
- */
-configure(subprojects) {
-    afterEvaluate { Project sub ->
-        if (!sub.plugins.hasPlugin('com.android.library') && !sub.plugins.hasPlugin('com.android.application')) {
-            return
-        }
-
-        // skip debug unit tests in CI
-        // TODO(vkryachko): provide ability for teams to control this if needed
-        if (System.getenv().containsKey("FIREBASE_CI")) {
-            sub.tasks.all {Task task ->
-                if (task.name == 'testDebugUnitTest') {
-                    task.enabled = false
-                }
-            }
-        }
-        sub.android {
-            testBuildType "release"
-
-            buildTypes {
-                // In the case of and android library signing config only affects instrumentation test APK.
-                // We need it signed with default debug credentials in order for FTL to accept the APK.
-                release.signingConfig = debug.signingConfig
-            }
-        }
-    }
-}
 
 /**
  * Configure "Preguarding" and Desugaring for the subprojects.