diff --git a/analytics/testapp/build.gradle b/analytics/testapp/build.gradle
index 4293919..d36bdec 100644
--- a/analytics/testapp/build.gradle
+++ b/analytics/testapp/build.gradle
@@ -3,7 +3,7 @@ buildscript {
   repositories {
     mavenLocal()
     maven { url 'https://maven.google.com'  }
-    jcenter()
+    mavenCentral()
   }
   dependencies {
     classpath 'com.android.tools.build:gradle:4.2.1'
@@ -15,7 +15,7 @@ allprojects {
   repositories {
     mavenLocal()
     maven { url 'https://maven.google.com'  }
-    jcenter()
+    mavenCentral()
   }
 }
 
diff --git a/auth/testapp/build.gradle b/auth/testapp/build.gradle
index eb73970..d583d3e 100644
--- a/auth/testapp/build.gradle
+++ b/auth/testapp/build.gradle
@@ -3,7 +3,7 @@ buildscript {
   repositories {
     mavenLocal()
     maven { url 'https://maven.google.com'  }
-    jcenter()
+    mavenCentral()
   }
   dependencies {
     classpath 'com.android.tools.build:gradle:4.2.1'
@@ -15,7 +15,7 @@ allprojects {
   repositories {
     mavenLocal()
     maven { url 'https://maven.google.com'  }
-    jcenter()
+    mavenCentral()
   }
 }
 
diff --git a/database/testapp/build.gradle b/database/testapp/build.gradle
index bfa9128..529c6d6 100644
--- a/database/testapp/build.gradle
+++ b/database/testapp/build.gradle
@@ -3,7 +3,7 @@ buildscript {
   repositories {
     mavenLocal()
     maven { url 'https://maven.google.com'  }
-    jcenter()
+    mavenCentral()
   }
   dependencies {
     classpath 'com.android.tools.build:gradle:4.2.1'
@@ -15,7 +15,7 @@ allprojects {
   repositories {
     mavenLocal()
     maven { url 'https://maven.google.com'  }
-    jcenter()
+    mavenCentral()
   }
 }
 
diff --git a/dynamic_links/testapp/build.gradle b/dynamic_links/testapp/build.gradle
index e7b828b..9ea0a3b 100644
--- a/dynamic_links/testapp/build.gradle
+++ b/dynamic_links/testapp/build.gradle
@@ -3,7 +3,7 @@ buildscript {
   repositories {
     mavenLocal()
     maven { url 'https://maven.google.com'  }
-    jcenter()
+    mavenCentral()
   }
   dependencies {
     classpath 'com.android.tools.build:gradle:4.2.1'
@@ -15,7 +15,7 @@ allprojects {
   repositories {
     mavenLocal()
     maven { url 'https://maven.google.com'  }
-    jcenter()
+    mavenCentral()
   }
 }
 
diff --git a/firestore/testapp/build.gradle b/firestore/testapp/build.gradle
index 6adb3b5..4f3b646 100644
--- a/firestore/testapp/build.gradle
+++ b/firestore/testapp/build.gradle
@@ -3,7 +3,7 @@ buildscript {
   repositories {
     mavenLocal()
     maven { url 'https://maven.google.com'  }
-    jcenter()
+    mavenCentral()
   }
   dependencies {
     classpath 'com.android.tools.build:gradle:4.2.1'
@@ -15,7 +15,7 @@ allprojects {
   repositories {
     mavenLocal()
     maven { url 'https://maven.google.com'  }
-    jcenter()
+    mavenCentral()
   }
 }
 
diff --git a/functions/testapp/build.gradle b/functions/testapp/build.gradle
index d47c348..9a4b578 100644
--- a/functions/testapp/build.gradle
+++ b/functions/testapp/build.gradle
@@ -3,7 +3,7 @@ buildscript {
   repositories {
     mavenLocal()
     maven { url 'https://maven.google.com'  }
-    jcenter()
+    mavenCentral()
   }
   dependencies {
     classpath 'com.android.tools.build:gradle:4.2.1'
@@ -15,7 +15,7 @@ allprojects {
   repositories {
     mavenLocal()
     maven { url 'https://maven.google.com'  }
-    jcenter()
+    mavenCentral()
   }
 }
 
diff --git a/gma/testapp/build.gradle b/gma/testapp/build.gradle
index 4cf159a..25f771e 100644
--- a/gma/testapp/build.gradle
+++ b/gma/testapp/build.gradle
@@ -4,7 +4,7 @@ buildscript {
   repositories {
     mavenLocal()
     maven { url 'https://maven.google.com'  }
-    jcenter()
+    mavenCentral()
   }
   dependencies {
     classpath 'com.android.tools.build:gradle:4.2.1'
@@ -15,7 +15,7 @@ allprojects {
   repositories {
     mavenLocal()
     maven { url 'https://maven.google.com'  }
-    jcenter()
+    mavenCentral()
   }
 }
 
diff --git a/messaging/testapp/build.gradle b/messaging/testapp/build.gradle
index 4f607fe..5692df6 100644
--- a/messaging/testapp/build.gradle
+++ b/messaging/testapp/build.gradle
@@ -3,7 +3,7 @@ buildscript {
   repositories {
     mavenLocal()
     maven { url 'https://maven.google.com'  }
-    jcenter()
+    mavenCentral()
   }
   dependencies {
     classpath 'com.android.tools.build:gradle:4.2.1'
@@ -15,7 +15,7 @@ allprojects {
   repositories {
     mavenLocal()
     maven { url 'https://maven.google.com'  }
-    jcenter()
+    mavenCentral()
   }
 }
 
diff --git a/remote_config/testapp/build.gradle b/remote_config/testapp/build.gradle
index 4802ecb..4d2a7f8 100644
--- a/remote_config/testapp/build.gradle
+++ b/remote_config/testapp/build.gradle
@@ -3,7 +3,7 @@ buildscript {
   repositories {
     mavenLocal()
     maven { url 'https://maven.google.com'  }
-    jcenter()
+    mavenCentral()
   }
   dependencies {
     classpath 'com.android.tools.build:gradle:4.2.1'
@@ -15,7 +15,7 @@ allprojects {
   repositories {
     mavenLocal()
     maven { url 'https://maven.google.com'  }
-    jcenter()
+    mavenCentral()
   }
 }