diff --git a/extensions/cast/src/test/AndroidManifest.xml b/extensions/cast/src/test/AndroidManifest.xml
index 057efdc245..3f34bbb1f5 100644
--- a/extensions/cast/src/test/AndroidManifest.xml
+++ b/extensions/cast/src/test/AndroidManifest.xml
@@ -15,7 +15,6 @@
 -->
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
     package="com.google.android.exoplayer2.ext.cast.test">
 
   <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="26"/>
diff --git a/extensions/cronet/src/test/AndroidManifest.xml b/extensions/cronet/src/test/AndroidManifest.xml
index 52be9aa157..a1512ae605 100644
--- a/extensions/cronet/src/test/AndroidManifest.xml
+++ b/extensions/cronet/src/test/AndroidManifest.xml
@@ -15,7 +15,6 @@
 -->
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
     package="com.google.android.exoplayer2.ext.cronet">
 
   <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="26"/>
diff --git a/library/core/src/test/AndroidManifest.xml b/library/core/src/test/AndroidManifest.xml
index 660c33c636..f2a4cd6647 100644
--- a/library/core/src/test/AndroidManifest.xml
+++ b/library/core/src/test/AndroidManifest.xml
@@ -15,7 +15,6 @@
 -->
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
     package="com.google.android.exoplayer2.core.test">
 
   <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="26"/>
diff --git a/library/dash/src/test/AndroidManifest.xml b/library/dash/src/test/AndroidManifest.xml
index eecf596b92..d18291d0ee 100644
--- a/library/dash/src/test/AndroidManifest.xml
+++ b/library/dash/src/test/AndroidManifest.xml
@@ -15,7 +15,6 @@
 -->
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
     package="com.google.android.exoplayer2.source.dash.test">
 
   <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="25"/>
diff --git a/library/hls/src/test/AndroidManifest.xml b/library/hls/src/test/AndroidManifest.xml
index 331f3439ad..89fab4d9a2 100644
--- a/library/hls/src/test/AndroidManifest.xml
+++ b/library/hls/src/test/AndroidManifest.xml
@@ -15,7 +15,6 @@
 -->
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
     package="com.google.android.exoplayer2.source.hls.test">
 
   <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="26"/>
diff --git a/library/smoothstreaming/src/test/AndroidManifest.xml b/library/smoothstreaming/src/test/AndroidManifest.xml
index 1a8f8ee9c4..61eb3caddf 100644
--- a/library/smoothstreaming/src/test/AndroidManifest.xml
+++ b/library/smoothstreaming/src/test/AndroidManifest.xml
@@ -15,7 +15,6 @@
 -->
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
     package="com.google.android.exoplayer2.source.smoothstreaming.test">
 
   <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="26"/>
diff --git a/testutils/src/test/AndroidManifest.xml b/testutils/src/test/AndroidManifest.xml
index 9602d01633..bea920852c 100644
--- a/testutils/src/test/AndroidManifest.xml
+++ b/testutils/src/test/AndroidManifest.xml
@@ -15,7 +15,6 @@
 -->
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
     package="com.google.android.exoplayer2.testutil.test">
 
   <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="26"/>