diff --git a/changelog/25550.txt b/changelog/25550.txt
new file mode 100644
index 000000000000..8a325837e569
--- /dev/null
+++ b/changelog/25550.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+openapi: added the missing migrate parameter for the unseal endpoint in vault/logical_system_paths.go
+```
diff --git a/vault/logical_system_paths.go b/vault/logical_system_paths.go
index 818abbbeb5eb..a350ea3f0269 100644
--- a/vault/logical_system_paths.go
+++ b/vault/logical_system_paths.go
@@ -1180,6 +1180,10 @@ func (b *SystemBackend) rekeyPaths() []*framework.Path {
 					Type:        framework.TypeBool,
 					Description: "Specifies if previously-provided unseal keys are discarded and the unseal process is reset.",
 				},
+				"migrate": {
+					Type:        framework.TypeBool,
+					Description: "Used to migrate the seal from shamir to autoseal or autoseal to shamir. Must be provided on all unseal key calls.",
+				},
 			},
 
 			Operations: map[logical.Operation]framework.OperationHandler{