diff --git a/.circleci/config.yml b/.circleci/config.yml
index c315a987..e36b3a06 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -128,7 +128,7 @@ android_defaults: &android_defaults
   <<: *defaults
   docker:
     - image: invertase/react-native-firebase-android:standard
-  resource_class: "large"
+  resource_class: "xlarge"
   working_directory: ~/react-native-firebase
   environment:
     - _JAVA_OPTIONS: "-XX:+UnlockExperimentalVMOptions -XX:+UseCGroupMemoryLimitForHeap -Xmx2048m"
@@ -137,7 +137,7 @@ android_defaults: &android_defaults
 # IOS
 macos_defaults: &macos_defaults
   <<: *defaults
-  resource_class: "medium"
+  resource_class: "large"
   macos:
     xcode: "10.1.0"