diff --git a/gems/activemodel/7.1/activemodel-7.1.rbs b/gems/activemodel/7.1/activemodel-7.1.rbs
index 13680671..b6d9b53f 100644
--- a/gems/activemodel/7.1/activemodel-7.1.rbs
+++ b/gems/activemodel/7.1/activemodel-7.1.rbs
@@ -1,3 +1,11 @@
+module ActiveModel
+  module Access
+    def slice: (*Symbol | String) -> ActiveSupport::HashWithIndifferentAccess[Symbol, untyped]
+
+    def values_at: (*Symbol | String) -> Array[untyped]
+  end
+end
+
 module ActiveModel
   module API
     extend ActiveSupport::Concern
@@ -42,3 +50,9 @@ module ActiveModel
     def strict_match?: (Symbol | String attribute, (Symbol | String)? type, **untyped options) -> bool
   end
 end
+
+module ActiveModel
+  module Model
+    include ActiveModel::Access
+  end
+end