diff --git a/yaml-migrations/m_2021-12-10-security_1.yaml b/yaml-migrations/m_2021-12-10-security_1.yaml
new file mode 100644
index 000000000..a845daf00
--- /dev/null
+++ b/yaml-migrations/m_2021-12-10-security_1.yaml
@@ -0,0 +1,12 @@
+# See: https://github.com/bolt/core/pull/3007
+
+file: packages/security.yaml
+since: 5.1.0
+
+add:
+    security:
+        enable_authenticator_manager: true
+        firewalls:
+            main:
+                custom_authenticators:
+                    - Bolt\Security\LoginFormAuthenticator
diff --git a/yaml-migrations/m_2021-12-10-security_2.yaml b/yaml-migrations/m_2021-12-10-security_2.yaml
new file mode 100644
index 000000000..21a20c4c8
--- /dev/null
+++ b/yaml-migrations/m_2021-12-10-security_2.yaml
@@ -0,0 +1,13 @@
+# See: https://github.com/bolt/core/pull/3007
+
+file: packages/security.yaml
+since: 5.1.0
+
+remove:
+    security:
+        firewalls:
+            main:
+                anonymous: ~
+                guard: ~
+                logout:
+                    handler: ~