diff --git a/airflow/providers/fab/provider.yaml b/airflow/providers/fab/provider.yaml
index 57cce91c754f7..ed8131cdb224c 100644
--- a/airflow/providers/fab/provider.yaml
+++ b/airflow/providers/fab/provider.yaml
@@ -51,7 +51,7 @@ dependencies:
   # Every time we update FAB version here, please make sure that you review the classes and models in
   # `airflow/providers/fab/auth_manager/security_manager/override.py` with their upstream counterparts.
   # In particular, make sure any breaking changes, for example any new methods, are accounted for.
-  - flask-appbuilder==4.5.0
+  - flask-appbuilder==4.5.1
   - flask-login>=0.6.2
   - google-re2>=1.0
   - jmespath>=0.7.0
diff --git a/airflow/www/security_manager.py b/airflow/www/security_manager.py
index 926148f7eba86..3b1b98f495250 100644
--- a/airflow/www/security_manager.py
+++ b/airflow/www/security_manager.py
@@ -108,8 +108,9 @@ def before_request():
         g.user = get_auth_manager().get_user()
 
     def create_limiter(self) -> Limiter:
-        limiter = Limiter(key_func=get_remote_address)
-        limiter.init_app(self.appbuilder.get_app)
+        app = self.appbuilder.get_app
+        limiter = Limiter(key_func=app.config.get("RATELIMIT_KEY_FUNC", get_remote_address))
+        limiter.init_app(app)
         return limiter
 
     def register_views(self):
diff --git a/dev/breeze/tests/test_packages.py b/dev/breeze/tests/test_packages.py
index 228a1ca0dc5ed..aad2428be7ede 100644
--- a/dev/breeze/tests/test_packages.py
+++ b/dev/breeze/tests/test_packages.py
@@ -166,7 +166,7 @@ def test_get_documentation_package_path():
             "",
             """
     "apache-airflow>=2.9.0",
-    "flask-appbuilder==4.5.0",
+    "flask-appbuilder==4.5.1",
     "flask-login>=0.6.2",
     "flask>=2.2,<2.3",
     "google-re2>=1.0",
@@ -179,7 +179,7 @@ def test_get_documentation_package_path():
             "dev0",
             """
     "apache-airflow>=2.9.0.dev0",
-    "flask-appbuilder==4.5.0",
+    "flask-appbuilder==4.5.1",
     "flask-login>=0.6.2",
     "flask>=2.2,<2.3",
     "google-re2>=1.0",
@@ -192,7 +192,7 @@ def test_get_documentation_package_path():
             "beta0",
             """
     "apache-airflow>=2.9.0b0",
-    "flask-appbuilder==4.5.0",
+    "flask-appbuilder==4.5.1",
     "flask-login>=0.6.2",
     "flask>=2.2,<2.3",
     "google-re2>=1.0",
diff --git a/generated/provider_dependencies.json b/generated/provider_dependencies.json
index 5680f4c8b7cce..ef1f83af72e5b 100644
--- a/generated/provider_dependencies.json
+++ b/generated/provider_dependencies.json
@@ -550,7 +550,7 @@
   "fab": {
     "deps": [
       "apache-airflow>=2.9.0",
-      "flask-appbuilder==4.5.0",
+      "flask-appbuilder==4.5.1",
       "flask-login>=0.6.2",
       "flask>=2.2,<2.3",
       "google-re2>=1.0",