diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 4d14a67e1..0c37ae42c 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.39.0"
+  ".": "1.40.0"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index ebd672bf3..564ef9424 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
-configured_endpoints: 214
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/increase%2Fincrease-e37d9eb06122e71071da98a7375420ce776ad9aa05176bed89a232bd6854f26b.yml
-openapi_spec_hash: 8ffb1a0fd8523b24113105717c5d85d8
-config_hash: b0b366d8c705ea0efe62093bae953e5a
+configured_endpoints: 215
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/increase%2Fincrease-9a5905fe541badfa11ad0641e7aea625c9fb0bc59ba33b1d43d8e88cbbdd71b2.yml
+openapi_spec_hash: 4347de40c3142cd56c2185aac9a6739e
+config_hash: 0b0a2503208283b283fc5bc6df6a07a5
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3a6835ee4..add8563eb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 1.40.0 (2025-08-20)
+
+Full Changelog: [v1.39.0...v1.40.0](https://github.com/Increase/increase-ruby/compare/v1.39.0...v1.40.0)
+
+### Features
+
+* **api:** api update ([6f2b4ab](https://github.com/Increase/increase-ruby/commit/6f2b4ab35ffbb974911ac85740af55836f9609e1))
+
 ## 1.39.0 (2025-08-20)
 
 Full Changelog: [v1.38.0...v1.39.0](https://github.com/Increase/increase-ruby/compare/v1.38.0...v1.39.0)
diff --git a/Gemfile.lock b/Gemfile.lock
index 2699a11d5..976271366 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GIT
 PATH
   remote: .
   specs:
-    increase (1.39.0)
+    increase (1.40.0)
       connection_pool
 
 GEM
diff --git a/README.md b/README.md
index 291e02f9e..2c4d032c4 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ To use this gem, install via Bundler by adding the following to your application
 <!-- x-release-please-start-version -->
 
 ```ruby
-gem "increase", "~> 1.39.0"
+gem "increase", "~> 1.40.0"
 ```
 
 <!-- x-release-please-end -->
diff --git a/lib/increase.rb b/lib/increase.rb
index 9622c09f8..217f6fe3d 100644
--- a/lib/increase.rb
+++ b/lib/increase.rb
@@ -97,6 +97,7 @@
 require_relative "increase/models/bookkeeping_entry_set_list_params"
 require_relative "increase/models/bookkeeping_entry_set_retrieve_params"
 require_relative "increase/models/card"
+require_relative "increase/models/card_create_details_iframe_params"
 require_relative "increase/models/card_create_params"
 require_relative "increase/models/card_details"
 require_relative "increase/models/card_details_params"
@@ -104,6 +105,7 @@
 require_relative "increase/models/card_dispute_create_params"
 require_relative "increase/models/card_dispute_list_params"
 require_relative "increase/models/card_dispute_retrieve_params"
+require_relative "increase/models/card_iframe_url"
 require_relative "increase/models/card_list_params"
 require_relative "increase/models/card_payment"
 require_relative "increase/models/card_payment_list_params"
diff --git a/lib/increase/models.rb b/lib/increase/models.rb
index 2113313d4..4b095fe26 100644
--- a/lib/increase/models.rb
+++ b/lib/increase/models.rb
@@ -131,6 +131,8 @@ module Increase
 
   Card = Increase::Models::Card
 
+  CardCreateDetailsIframeParams = Increase::Models::CardCreateDetailsIframeParams
+
   CardCreateParams = Increase::Models::CardCreateParams
 
   CardDetails = Increase::Models::CardDetails
@@ -145,6 +147,8 @@ module Increase
 
   CardDisputeRetrieveParams = Increase::Models::CardDisputeRetrieveParams
 
+  CardIframeURL = Increase::Models::CardIframeURL
+
   CardListParams = Increase::Models::CardListParams
 
   CardPayment = Increase::Models::CardPayment
diff --git a/lib/increase/models/card_create_details_iframe_params.rb b/lib/increase/models/card_create_details_iframe_params.rb
new file mode 100644
index 000000000..fe35548e0
--- /dev/null
+++ b/lib/increase/models/card_create_details_iframe_params.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+module Increase
+  module Models
+    # @see Increase::Resources::Cards#create_details_iframe
+    class CardCreateDetailsIframeParams < Increase::Internal::Type::BaseModel
+      extend Increase::Internal::Type::RequestParameters::Converter
+      include Increase::Internal::Type::RequestParameters
+
+      # @!attribute physical_card_id
+      #   The identifier of the Physical Card to retrieve details for.
+      #
+      #   @return [String, nil]
+      optional :physical_card_id, String
+
+      # @!method initialize(physical_card_id: nil, request_options: {})
+      #   @param physical_card_id [String] The identifier of the Physical Card to retrieve details for.
+      #
+      #   @param request_options [Increase::RequestOptions, Hash{Symbol=>Object}]
+    end
+  end
+end
diff --git a/lib/increase/models/card_iframe_url.rb b/lib/increase/models/card_iframe_url.rb
new file mode 100644
index 000000000..a0a258c26
--- /dev/null
+++ b/lib/increase/models/card_iframe_url.rb
@@ -0,0 +1,52 @@
+# frozen_string_literal: true
+
+module Increase
+  module Models
+    # @see Increase::Resources::Cards#create_details_iframe
+    class CardIframeURL < Increase::Internal::Type::BaseModel
+      # @!attribute expires_at
+      #   The time the iframe URL will expire.
+      #
+      #   @return [Time]
+      required :expires_at, Time
+
+      # @!attribute iframe_url
+      #   The iframe URL for the Card. Treat this as an opaque URL.
+      #
+      #   @return [String]
+      required :iframe_url, String
+
+      # @!attribute type
+      #   A constant representing the object's type. For this resource it will always be
+      #   `card_iframe_url`.
+      #
+      #   @return [Symbol, Increase::Models::CardIframeURL::Type]
+      required :type, enum: -> { Increase::CardIframeURL::Type }
+
+      # @!method initialize(expires_at:, iframe_url:, type:)
+      #   Some parameter documentations has been truncated, see
+      #   {Increase::Models::CardIframeURL} for more details.
+      #
+      #   An object containing the iframe URL for a Card.
+      #
+      #   @param expires_at [Time] The time the iframe URL will expire.
+      #
+      #   @param iframe_url [String] The iframe URL for the Card. Treat this as an opaque URL.
+      #
+      #   @param type [Symbol, Increase::Models::CardIframeURL::Type] A constant representing the object's type. For this resource it will always be `
+
+      # A constant representing the object's type. For this resource it will always be
+      # `card_iframe_url`.
+      #
+      # @see Increase::Models::CardIframeURL#type
+      module Type
+        extend Increase::Internal::Type::Enum
+
+        CARD_IFRAME_URL = :card_iframe_url
+
+        # @!method self.values
+        #   @return [Array<Symbol>]
+      end
+    end
+  end
+end
diff --git a/lib/increase/resources/cards.rb b/lib/increase/resources/cards.rb
index b52b68a3b..7b34034f0 100644
--- a/lib/increase/resources/cards.rb
+++ b/lib/increase/resources/cards.rb
@@ -121,7 +121,34 @@ def list(params = {})
         )
       end
 
-      # Retrieve sensitive details for a Card
+      # Create an iframe URL for a Card to display the card details. More details about
+      # styling and usage can be found in the
+      # [documentation](/documentation/embedded-card-component).
+      #
+      # @overload create_details_iframe(card_id, physical_card_id: nil, request_options: {})
+      #
+      # @param card_id [String] The identifier of the Card to retrieve details for.
+      #
+      # @param physical_card_id [String] The identifier of the Physical Card to retrieve details for.
+      #
+      # @param request_options [Increase::RequestOptions, Hash{Symbol=>Object}, nil]
+      #
+      # @return [Increase::Models::CardIframeURL]
+      #
+      # @see Increase::Models::CardCreateDetailsIframeParams
+      def create_details_iframe(card_id, params = {})
+        parsed, options = Increase::CardCreateDetailsIframeParams.dump_request(params)
+        @client.request(
+          method: :post,
+          path: ["cards/%1$s/create_details_iframe", card_id],
+          body: parsed,
+          model: Increase::CardIframeURL,
+          options: options
+        )
+      end
+
+      # Sensitive details for a Card include the primary account number, expiry, card
+      # verification code, and PIN.
       #
       # @overload details(card_id, request_options: {})
       #
diff --git a/lib/increase/version.rb b/lib/increase/version.rb
index 65a6b9b1d..5fc92a7de 100644
--- a/lib/increase/version.rb
+++ b/lib/increase/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Increase
-  VERSION = "1.39.0"
+  VERSION = "1.40.0"
 end
diff --git a/rbi/increase/models.rbi b/rbi/increase/models.rbi
index fc1343cfc..dab9010e8 100644
--- a/rbi/increase/models.rbi
+++ b/rbi/increase/models.rbi
@@ -104,6 +104,9 @@ module Increase
 
   Card = Increase::Models::Card
 
+  CardCreateDetailsIframeParams =
+    Increase::Models::CardCreateDetailsIframeParams
+
   CardCreateParams = Increase::Models::CardCreateParams
 
   CardDetails = Increase::Models::CardDetails
@@ -118,6 +121,8 @@ module Increase
 
   CardDisputeRetrieveParams = Increase::Models::CardDisputeRetrieveParams
 
+  CardIframeURL = Increase::Models::CardIframeURL
+
   CardListParams = Increase::Models::CardListParams
 
   CardPayment = Increase::Models::CardPayment
diff --git a/rbi/increase/models/card_create_details_iframe_params.rbi b/rbi/increase/models/card_create_details_iframe_params.rbi
new file mode 100644
index 000000000..2ce37ac4b
--- /dev/null
+++ b/rbi/increase/models/card_create_details_iframe_params.rbi
@@ -0,0 +1,49 @@
+# typed: strong
+
+module Increase
+  module Models
+    class CardCreateDetailsIframeParams < Increase::Internal::Type::BaseModel
+      extend Increase::Internal::Type::RequestParameters::Converter
+      include Increase::Internal::Type::RequestParameters
+
+      OrHash =
+        T.type_alias do
+          T.any(
+            Increase::CardCreateDetailsIframeParams,
+            Increase::Internal::AnyHash
+          )
+        end
+
+      # The identifier of the Physical Card to retrieve details for.
+      sig { returns(T.nilable(String)) }
+      attr_reader :physical_card_id
+
+      sig { params(physical_card_id: String).void }
+      attr_writer :physical_card_id
+
+      sig do
+        params(
+          physical_card_id: String,
+          request_options: Increase::RequestOptions::OrHash
+        ).returns(T.attached_class)
+      end
+      def self.new(
+        # The identifier of the Physical Card to retrieve details for.
+        physical_card_id: nil,
+        request_options: {}
+      )
+      end
+
+      sig do
+        override.returns(
+          {
+            physical_card_id: String,
+            request_options: Increase::RequestOptions
+          }
+        )
+      end
+      def to_hash
+      end
+    end
+  end
+end
diff --git a/rbi/increase/models/card_iframe_url.rbi b/rbi/increase/models/card_iframe_url.rbi
new file mode 100644
index 000000000..f9abb4d5b
--- /dev/null
+++ b/rbi/increase/models/card_iframe_url.rbi
@@ -0,0 +1,77 @@
+# typed: strong
+
+module Increase
+  module Models
+    class CardIframeURL < Increase::Internal::Type::BaseModel
+      OrHash =
+        T.type_alias do
+          T.any(Increase::CardIframeURL, Increase::Internal::AnyHash)
+        end
+
+      # The time the iframe URL will expire.
+      sig { returns(Time) }
+      attr_accessor :expires_at
+
+      # The iframe URL for the Card. Treat this as an opaque URL.
+      sig { returns(String) }
+      attr_accessor :iframe_url
+
+      # A constant representing the object's type. For this resource it will always be
+      # `card_iframe_url`.
+      sig { returns(Increase::CardIframeURL::Type::TaggedSymbol) }
+      attr_accessor :type
+
+      # An object containing the iframe URL for a Card.
+      sig do
+        params(
+          expires_at: Time,
+          iframe_url: String,
+          type: Increase::CardIframeURL::Type::OrSymbol
+        ).returns(T.attached_class)
+      end
+      def self.new(
+        # The time the iframe URL will expire.
+        expires_at:,
+        # The iframe URL for the Card. Treat this as an opaque URL.
+        iframe_url:,
+        # A constant representing the object's type. For this resource it will always be
+        # `card_iframe_url`.
+        type:
+      )
+      end
+
+      sig do
+        override.returns(
+          {
+            expires_at: Time,
+            iframe_url: String,
+            type: Increase::CardIframeURL::Type::TaggedSymbol
+          }
+        )
+      end
+      def to_hash
+      end
+
+      # A constant representing the object's type. For this resource it will always be
+      # `card_iframe_url`.
+      module Type
+        extend Increase::Internal::Type::Enum
+
+        TaggedSymbol =
+          T.type_alias { T.all(Symbol, Increase::CardIframeURL::Type) }
+        OrSymbol = T.type_alias { T.any(Symbol, String) }
+
+        CARD_IFRAME_URL =
+          T.let(:card_iframe_url, Increase::CardIframeURL::Type::TaggedSymbol)
+
+        sig do
+          override.returns(
+            T::Array[Increase::CardIframeURL::Type::TaggedSymbol]
+          )
+        end
+        def self.values
+        end
+      end
+    end
+  end
+end
diff --git a/rbi/increase/resources/cards.rbi b/rbi/increase/resources/cards.rbi
index 2f3b69168..b91f9b061 100644
--- a/rbi/increase/resources/cards.rbi
+++ b/rbi/increase/resources/cards.rbi
@@ -111,7 +111,27 @@ module Increase
       )
       end
 
-      # Retrieve sensitive details for a Card
+      # Create an iframe URL for a Card to display the card details. More details about
+      # styling and usage can be found in the
+      # [documentation](/documentation/embedded-card-component).
+      sig do
+        params(
+          card_id: String,
+          physical_card_id: String,
+          request_options: Increase::RequestOptions::OrHash
+        ).returns(Increase::CardIframeURL)
+      end
+      def create_details_iframe(
+        # The identifier of the Card to retrieve details for.
+        card_id,
+        # The identifier of the Physical Card to retrieve details for.
+        physical_card_id: nil,
+        request_options: {}
+      )
+      end
+
+      # Sensitive details for a Card include the primary account number, expiry, card
+      # verification code, and PIN.
       sig do
         params(
           card_id: String,
diff --git a/sig/increase/models.rbs b/sig/increase/models.rbs
index 2c6c3365c..d9c1d3c34 100644
--- a/sig/increase/models.rbs
+++ b/sig/increase/models.rbs
@@ -91,6 +91,8 @@ module Increase
 
   class Card = Increase::Models::Card
 
+  class CardCreateDetailsIframeParams = Increase::Models::CardCreateDetailsIframeParams
+
   class CardCreateParams = Increase::Models::CardCreateParams
 
   class CardDetails = Increase::Models::CardDetails
@@ -105,6 +107,8 @@ module Increase
 
   class CardDisputeRetrieveParams = Increase::Models::CardDisputeRetrieveParams
 
+  class CardIframeURL = Increase::Models::CardIframeURL
+
   class CardListParams = Increase::Models::CardListParams
 
   class CardPayment = Increase::Models::CardPayment
diff --git a/sig/increase/models/card_create_details_iframe_params.rbs b/sig/increase/models/card_create_details_iframe_params.rbs
new file mode 100644
index 000000000..f8c4ff779
--- /dev/null
+++ b/sig/increase/models/card_create_details_iframe_params.rbs
@@ -0,0 +1,26 @@
+module Increase
+  module Models
+    type card_create_details_iframe_params =
+      { physical_card_id: String }
+      & Increase::Internal::Type::request_parameters
+
+    class CardCreateDetailsIframeParams < Increase::Internal::Type::BaseModel
+      extend Increase::Internal::Type::RequestParameters::Converter
+      include Increase::Internal::Type::RequestParameters
+
+      attr_reader physical_card_id: String?
+
+      def physical_card_id=: (String) -> String
+
+      def initialize: (
+        ?physical_card_id: String,
+        ?request_options: Increase::request_opts
+      ) -> void
+
+      def to_hash: -> {
+        physical_card_id: String,
+        request_options: Increase::RequestOptions
+      }
+    end
+  end
+end
diff --git a/sig/increase/models/card_iframe_url.rbs b/sig/increase/models/card_iframe_url.rbs
new file mode 100644
index 000000000..f9d703bb0
--- /dev/null
+++ b/sig/increase/models/card_iframe_url.rbs
@@ -0,0 +1,40 @@
+module Increase
+  module Models
+    type card_iframe_url =
+      {
+        expires_at: Time,
+        iframe_url: String,
+        type: Increase::Models::CardIframeURL::type_
+      }
+
+    class CardIframeURL < Increase::Internal::Type::BaseModel
+      attr_accessor expires_at: Time
+
+      attr_accessor iframe_url: String
+
+      attr_accessor type: Increase::Models::CardIframeURL::type_
+
+      def initialize: (
+        expires_at: Time,
+        iframe_url: String,
+        type: Increase::Models::CardIframeURL::type_
+      ) -> void
+
+      def to_hash: -> {
+        expires_at: Time,
+        iframe_url: String,
+        type: Increase::Models::CardIframeURL::type_
+      }
+
+      type type_ = :card_iframe_url
+
+      module Type
+        extend Increase::Internal::Type::Enum
+
+        CARD_IFRAME_URL: :card_iframe_url
+
+        def self?.values: -> ::Array[Increase::Models::CardIframeURL::type_]
+      end
+    end
+  end
+end
diff --git a/sig/increase/resources/cards.rbs b/sig/increase/resources/cards.rbs
index d5292afc8..c73923f3a 100644
--- a/sig/increase/resources/cards.rbs
+++ b/sig/increase/resources/cards.rbs
@@ -35,6 +35,12 @@ module Increase
         ?request_options: Increase::request_opts
       ) -> Increase::Internal::Page[Increase::Card]
 
+      def create_details_iframe: (
+        String card_id,
+        ?physical_card_id: String,
+        ?request_options: Increase::request_opts
+      ) -> Increase::CardIframeURL
+
       def details: (
         String card_id,
         ?request_options: Increase::request_opts
diff --git a/test/increase/resources/cards_test.rb b/test/increase/resources/cards_test.rb
index 3949c8d1b..efb2d45be 100644
--- a/test/increase/resources/cards_test.rb
+++ b/test/increase/resources/cards_test.rb
@@ -114,6 +114,22 @@ def test_list
     end
   end
 
+  def test_create_details_iframe
+    response = @increase.cards.create_details_iframe("card_id")
+
+    assert_pattern do
+      response => Increase::CardIframeURL
+    end
+
+    assert_pattern do
+      response => {
+        expires_at: Time,
+        iframe_url: String,
+        type: Increase::CardIframeURL::Type
+      }
+    end
+  end
+
   def test_details
     response = @increase.cards.details("card_id")