diff --git a/docs/security/authentication.de.md b/docs/security/authentication.de.md
index 46973d7a..ed6851b4 100644
--- a/docs/security/authentication.de.md
+++ b/docs/security/authentication.de.md
@@ -530,8 +530,8 @@ import Vapor
 import Fluent
 
 extension UserToken: ModelTokenAuthenticatable {
-    static let valueKey = \UserToken.$value
-    static let userKey = \UserToken.$user
+    static var valueKey: KeyPath<UserToken, Field<String>> { \.$value }
+    static var userKey: KeyPath<UserToken, Parent<User>> { \.$user }
 
     var isValid: Bool {
         true
diff --git a/docs/security/authentication.es.md b/docs/security/authentication.es.md
index 9643ce19..f58b8647 100644
--- a/docs/security/authentication.es.md
+++ b/docs/security/authentication.es.md
@@ -552,8 +552,8 @@ import Vapor
 import Fluent
 
 extension UserToken: ModelTokenAuthenticatable {
-    static let valueKey = \UserToken.$value
-    static let userKey = \UserToken.$user
+    static var valueKey: KeyPath<UserToken, Field<String>> { \.$value }
+    static var userKey: KeyPath<UserToken, Parent<User>> { \.$user }
 
     var isValid: Bool {
         true
diff --git a/docs/security/authentication.it.md b/docs/security/authentication.it.md
index 1d4a617d..05a64d1f 100644
--- a/docs/security/authentication.it.md
+++ b/docs/security/authentication.it.md
@@ -549,8 +549,8 @@ import Vapor
 import Fluent
 
 extension UserToken: ModelTokenAuthenticatable {
-    static let valueKey = \UserToken.$value
-    static let userKey = \UserToken.$user
+    static var valueKey: KeyPath<UserToken, Field<String>> { \.$value }
+    static var userKey: KeyPath<UserToken, Parent<User>> { \.$user }
 
     var isValid: Bool {
         true
diff --git a/docs/security/authentication.md b/docs/security/authentication.md
index 742eb98d..7fe90460 100644
--- a/docs/security/authentication.md
+++ b/docs/security/authentication.md
@@ -550,8 +550,8 @@ import Vapor
 import Fluent
 
 extension UserToken: ModelTokenAuthenticatable {
-    static let valueKey = \UserToken.$value
-    static let userKey = \UserToken.$user
+    static var valueKey: KeyPath<UserToken, Field<String>> { \.$value }
+    static var userKey: KeyPath<UserToken, Parent<User>> { \.$user }
 
     var isValid: Bool {
         true
diff --git a/docs/security/authentication.nl.md b/docs/security/authentication.nl.md
index ff4be075..9676b8a4 100644
--- a/docs/security/authentication.nl.md
+++ b/docs/security/authentication.nl.md
@@ -547,8 +547,8 @@ import Vapor
 import Fluent
 
 extension UserToken: ModelTokenAuthenticatable {
-    static let valueKey = \UserToken.$value
-    static let userKey = \UserToken.$user
+    static var valueKey: KeyPath<UserToken, Field<String>> { \.$value }
+    static var userKey: KeyPath<UserToken, Parent<User>> { \.$user }
 
     var isValid: Bool {
         true
diff --git a/docs/security/authentication.zh.md b/docs/security/authentication.zh.md
index 5155dda4..8f7cdd0e 100644
--- a/docs/security/authentication.zh.md
+++ b/docs/security/authentication.zh.md
@@ -548,8 +548,8 @@ import Vapor
 import Fluent
 
 extension UserToken: ModelTokenAuthenticatable {
-    static let valueKey = \UserToken.$value
-    static let userKey = \UserToken.$user
+    static var valueKey: KeyPath<UserToken, Field<String>> { \.$value }
+    static var userKey: KeyPath<UserToken, Parent<User>> { \.$user }
 
     var isValid: Bool {
         true