diff --git a/firestore/app/build.gradle.kts b/firestore/app/build.gradle.kts
index 1bd8eb28..0a4331f2 100644
--- a/firestore/app/build.gradle.kts
+++ b/firestore/app/build.gradle.kts
@@ -54,7 +54,7 @@ dependencies {
 
     // Firebase / Play Services
     implementation("com.google.firebase:firebase-auth")
-    implementation("com.google.android.gms:play-services-auth:21.4.0")
+    implementation("com.google.android.gms:play-services-auth:21.5.0")
     implementation("com.google.firebase:firebase-functions")
 
     // GeoFire (for Geoqueries solution)
diff --git a/messaging/app/build.gradle.kts b/messaging/app/build.gradle.kts
index 3a3c5035..633572c8 100644
--- a/messaging/app/build.gradle.kts
+++ b/messaging/app/build.gradle.kts
@@ -55,7 +55,7 @@ dependencies {
     // See: https://firebase.google.com/docs/cloud-messaging/manage-tokens
     implementation("com.google.firebase:firebase-firestore")
 
-    implementation("com.google.android.gms:play-services-auth:21.4.0")
+    implementation("com.google.android.gms:play-services-auth:21.5.0")
     implementation("androidx.work:work-runtime-ktx:2.11.0")
     implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.10.0")
 }