diff --git a/firestore/integration_test_internal/src/util/integration_test_util.cc b/firestore/integration_test_internal/src/util/integration_test_util.cc
index d3a4129ed5..281593703e 100644
--- a/firestore/integration_test_internal/src/util/integration_test_util.cc
+++ b/firestore/integration_test_internal/src/util/integration_test_util.cc
@@ -39,8 +39,8 @@ struct TestFriend {
 #if !defined(__ANDROID__)
     return new FirestoreInternal(
         app, database_id,
-        absl::make_unique<credentials::EmptyAuthCredentialsProvider>(),
-        absl::make_unique<credentials::EmptyAppCheckCredentialsProvider>());
+        std::make_shared<credentials::EmptyAuthCredentialsProvider>(),
+        std::make_shared<credentials::EmptyAppCheckCredentialsProvider>());
 #else
     return new FirestoreInternal(app, database_id);
 #endif  // !defined(__ANDROID__)
diff --git a/firestore/src/main/create_app_check_credentials_provider.h b/firestore/src/main/create_app_check_credentials_provider.h
index 50e515dfe5..e7c088d8d5 100644
--- a/firestore/src/main/create_app_check_credentials_provider.h
+++ b/firestore/src/main/create_app_check_credentials_provider.h
@@ -31,7 +31,7 @@ class App;
 
 namespace firestore {
 
-std::unique_ptr<credentials::AppCheckCredentialsProvider>
+std::shared_ptr<credentials::AppCheckCredentialsProvider>
 CreateAppCheckCredentialsProvider(App& app);
 
 }  // namespace firestore
diff --git a/firestore/src/main/create_app_check_credentials_provider_desktop.cc b/firestore/src/main/create_app_check_credentials_provider_desktop.cc
index 6225ffe142..ddb7c0152d 100644
--- a/firestore/src/main/create_app_check_credentials_provider_desktop.cc
+++ b/firestore/src/main/create_app_check_credentials_provider_desktop.cc
@@ -14,7 +14,8 @@
  * limitations under the License.
  */
 
-#include "absl/memory/memory.h"
+#include <memory>
+
 #include "firestore/src/main/app_check_credentials_provider_desktop.h"
 #include "firestore/src/main/create_credentials_provider.h"
 
@@ -23,9 +24,9 @@ namespace firestore {
 
 using credentials::AppCheckCredentialsProvider;
 
-std::unique_ptr<AppCheckCredentialsProvider> CreateAppCheckCredentialsProvider(
+std::shared_ptr<AppCheckCredentialsProvider> CreateAppCheckCredentialsProvider(
     App& app) {
-  return absl::make_unique<CppAppCheckCredentialsProvider>(app);
+  return std::make_shared<CppAppCheckCredentialsProvider>(app);
 }
 
 }  // namespace firestore
diff --git a/firestore/src/main/create_app_check_credentials_provider_ios.mm b/firestore/src/main/create_app_check_credentials_provider_ios.mm
index dfc6d8d6fe..60368f96cf 100644
--- a/firestore/src/main/create_app_check_credentials_provider_ios.mm
+++ b/firestore/src/main/create_app_check_credentials_provider_ios.mm
@@ -16,6 +16,8 @@
 
 #include "firestore/src/main/create_credentials_provider.h"
 
+#include <memory>
+
 #import "FIRAppInternal.h"
 #import "FIRComponent.h"
 #import "FIRComponentContainer.h"
@@ -24,7 +26,6 @@
 #import "FirebaseCore.h"
 
 #include "Firestore/core/src/credentials/firebase_app_check_credentials_provider_apple.h"
-#include "absl/memory/memory.h"
 #include "app/src/include/firebase/app.h"
 
 namespace firebase {
@@ -33,12 +34,12 @@
 using credentials::AppCheckCredentialsProvider;
 using credentials::FirebaseAppCheckCredentialsProvider;
 
-std::unique_ptr<AppCheckCredentialsProvider> CreateAppCheckCredentialsProvider(
+std::shared_ptr<AppCheckCredentialsProvider> CreateAppCheckCredentialsProvider(
     App& app) {
   FIRApp* ios_app = app.GetPlatformApp();
   auto ios_app_check = FIR_COMPONENT(FIRAppCheckInterop, ios_app.container);
-  return absl::make_unique<FirebaseAppCheckCredentialsProvider>(ios_app,
-                                                                ios_app_check);
+  return std::make_shared<FirebaseAppCheckCredentialsProvider>(ios_app,
+                                                               ios_app_check);
 }
 
 }  // namespace firestore
diff --git a/firestore/src/main/create_credentials_provider.h b/firestore/src/main/create_credentials_provider.h
index eb6837cf22..5edc5b8f74 100644
--- a/firestore/src/main/create_credentials_provider.h
+++ b/firestore/src/main/create_credentials_provider.h
@@ -31,7 +31,7 @@ class App;
 
 namespace firestore {
 
-std::unique_ptr<credentials::AuthCredentialsProvider> CreateCredentialsProvider(
+std::shared_ptr<credentials::AuthCredentialsProvider> CreateCredentialsProvider(
     App& app);
 
 }  // namespace firestore
diff --git a/firestore/src/main/create_credentials_provider_desktop.cc b/firestore/src/main/create_credentials_provider_desktop.cc
index fac9e68afb..5232e19e39 100644
--- a/firestore/src/main/create_credentials_provider_desktop.cc
+++ b/firestore/src/main/create_credentials_provider_desktop.cc
@@ -26,8 +26,8 @@ namespace firestore {
 using credentials::AuthCredentialsProvider;
 using firebase::auth::Auth;
 
-std::unique_ptr<AuthCredentialsProvider> CreateCredentialsProvider(App& app) {
-  return std::make_unique<FirebaseCppCredentialsProvider>(app);
+std::shared_ptr<AuthCredentialsProvider> CreateCredentialsProvider(App& app) {
+  return std::make_shared<FirebaseCppCredentialsProvider>(app);
 }
 
 }  // namespace firestore
diff --git a/firestore/src/main/create_credentials_provider_ios.mm b/firestore/src/main/create_credentials_provider_ios.mm
index a6999a3b69..57eb74441c 100644
--- a/firestore/src/main/create_credentials_provider_ios.mm
+++ b/firestore/src/main/create_credentials_provider_ios.mm
@@ -34,10 +34,10 @@
 using credentials::AuthCredentialsProvider;
 using credentials::FirebaseAuthCredentialsProvider;
 
-std::unique_ptr<AuthCredentialsProvider> CreateCredentialsProvider(App& app) {
+std::shared_ptr<AuthCredentialsProvider> CreateCredentialsProvider(App& app) {
   FIRApp* ios_app = app.GetPlatformApp();
   auto ios_auth = FIR_COMPONENT(FIRAuthInterop, ios_app.container);
-  return std::make_unique<FirebaseAuthCredentialsProvider>(ios_app, ios_auth);
+  return std::make_shared<FirebaseAuthCredentialsProvider>(ios_app, ios_auth);
 }
 
 }  // namespace firestore
diff --git a/firestore/src/main/firestore_main.cc b/firestore/src/main/firestore_main.cc
index 8a512a49e5..927c1ac2c7 100644
--- a/firestore/src/main/firestore_main.cc
+++ b/firestore/src/main/firestore_main.cc
@@ -109,8 +109,8 @@ FirestoreInternal::FirestoreInternal(App* app, const std::string& database_id)
 FirestoreInternal::FirestoreInternal(
     App* app,
     const std::string& database_id,
-    std::unique_ptr<AuthCredentialsProvider> auth_credentials,
-    std::unique_ptr<AppCheckCredentialsProvider> app_check_credentials)
+    std::shared_ptr<AuthCredentialsProvider> auth_credentials,
+    std::shared_ptr<AppCheckCredentialsProvider> app_check_credentials)
     : app_(NOT_NULL(app)),
       firestore_core_(CreateFirestore(app,
                                       database_id,
@@ -137,8 +137,8 @@ FirestoreInternal::~FirestoreInternal() {
 std::shared_ptr<api::Firestore> FirestoreInternal::CreateFirestore(
     App* app,
     const std::string& database_id,
-    std::unique_ptr<AuthCredentialsProvider> auth_credentials,
-    std::unique_ptr<AppCheckCredentialsProvider> app_check_credentials) {
+    std::shared_ptr<AuthCredentialsProvider> auth_credentials,
+    std::shared_ptr<AppCheckCredentialsProvider> app_check_credentials) {
   const AppOptions& opt = app->options();
   return std::make_shared<api::Firestore>(
       DatabaseId{opt.project_id(), database_id}, app->name(),
diff --git a/firestore/src/main/firestore_main.h b/firestore/src/main/firestore_main.h
index 7920eccc4f..ee423298f7 100644
--- a/firestore/src/main/firestore_main.h
+++ b/firestore/src/main/firestore_main.h
@@ -154,15 +154,15 @@ class FirestoreInternal {
   FirestoreInternal(
       App* app,
       const std::string& database_id,
-      std::unique_ptr<credentials::AuthCredentialsProvider> auth_credentials,
-      std::unique_ptr<credentials::AppCheckCredentialsProvider>
+      std::shared_ptr<credentials::AuthCredentialsProvider> auth_credentials,
+      std::shared_ptr<credentials::AppCheckCredentialsProvider>
           app_check_credentials);
 
   std::shared_ptr<api::Firestore> CreateFirestore(
       App* app,
       const std::string& database_id,
-      std::unique_ptr<credentials::AuthCredentialsProvider> auth_credentials,
-      std::unique_ptr<credentials::AppCheckCredentialsProvider>
+      std::shared_ptr<credentials::AuthCredentialsProvider> auth_credentials,
+      std::shared_ptr<credentials::AppCheckCredentialsProvider>
           app_check_credentials);
 
   // Gets the reference-counted Future implementation of this instance, which
diff --git a/release_build_files/readme.md b/release_build_files/readme.md
index bebceabca9..c5e8fec34c 100644
--- a/release_build_files/readme.md
+++ b/release_build_files/readme.md
@@ -616,6 +616,7 @@ code.
 ### Upcoming
 -   Changes
     - App Check: Add in support for Limited Use Tokens.
+    - Firestore (iOS): Fix crash when using Auth or App Check Credentials.
 
 ### 13.4.0
 -   Changes