diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 7361a57f..7ac8eadf 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.165.0"
+  ".": "1.166.0"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index 1df97ed7..e5b11df2 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 230
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/increase%2Fincrease-1d2c6658404319b576b7bc1c75242f23493b8ffedefd81b41b36dc5456af766a.yml
-openapi_spec_hash: 0d8eeda32c249e6371843545f8f211ff
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/increase%2Fincrease-acaa7510acabd57dfdde78063277cef0c611dd42abd998e5f1f851c4655e8fd0.yml
+openapi_spec_hash: d0684f4b10e09e2585ad70360531501c
 config_hash: ff2eb5f192b4de36611b37b27961c2d8
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b8b9fd4a..8397eeba 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 1.166.0 (2025-12-17)
+
+Full Changelog: [v1.165.0...v1.166.0](https://github.com/Increase/increase-ruby/compare/v1.165.0...v1.166.0)
+
+### Features
+
+* **api:** api update ([88bcbdb](https://github.com/Increase/increase-ruby/commit/88bcbdb902e7fb4c920d5e675385fb2a06a6ab96))
+
 ## 1.165.0 (2025-12-16)
 
 Full Changelog: [v1.164.1...v1.165.0](https://github.com/Increase/increase-ruby/compare/v1.164.1...v1.165.0)
diff --git a/Gemfile.lock b/Gemfile.lock
index c66eef08..53c62521 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GIT
 PATH
   remote: .
   specs:
-    increase (1.165.0)
+    increase (1.166.0)
       connection_pool
 
 GEM
diff --git a/README.md b/README.md
index efaf2838..b44fd205 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", "~> 1.165.0"
+gem "increase", "~> 1.166.0"
 ```
 
 <!-- x-release-please-end -->
diff --git a/lib/increase/models/export.rb b/lib/increase/models/export.rb
index e55e7dbf..09d6c3ac 100644
--- a/lib/increase/models/export.rb
+++ b/lib/increase/models/export.rb
@@ -115,6 +115,18 @@ module Category
         # Certain dashboard tables are available as CSV exports. This export cannot be created via the API.
         DASHBOARD_TABLE_CSV = :dashboard_table_csv
 
+        # A PDF of an account verification letter.
+        ACCOUNT_VERIFICATION_LETTER = :account_verification_letter
+
+        # A PDF of funding instructions.
+        FUNDING_INSTRUCTIONS = :funding_instructions
+
+        # A PDF of an Internal Revenue Service Form 1099-INT.
+        FORM_1099_INT = :form_1099_int
+
+        # A PDF of an Internal Revenue Service Form 1099-MISC.
+        FORM_1099_MISC = :form_1099_misc
+
         # @!method self.values
         #   @return [Array<Symbol>]
       end
diff --git a/lib/increase/models/export_list_params.rb b/lib/increase/models/export_list_params.rb
index 1021db5f..956023ac 100644
--- a/lib/increase/models/export_list_params.rb
+++ b/lib/increase/models/export_list_params.rb
@@ -106,6 +106,18 @@ module In
           # Certain dashboard tables are available as CSV exports. This export cannot be created via the API.
           DASHBOARD_TABLE_CSV = :dashboard_table_csv
 
+          # A PDF of an account verification letter.
+          ACCOUNT_VERIFICATION_LETTER = :account_verification_letter
+
+          # A PDF of funding instructions.
+          FUNDING_INSTRUCTIONS = :funding_instructions
+
+          # A PDF of an Internal Revenue Service Form 1099-INT.
+          FORM_1099_INT = :form_1099_int
+
+          # A PDF of an Internal Revenue Service Form 1099-MISC.
+          FORM_1099_MISC = :form_1099_misc
+
           # @!method self.values
           #   @return [Array<Symbol>]
         end
diff --git a/lib/increase/version.rb b/lib/increase/version.rb
index 0989fdaa..2991ad62 100644
--- a/lib/increase/version.rb
+++ b/lib/increase/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Increase
-  VERSION = "1.165.0"
+  VERSION = "1.166.0"
 end
diff --git a/rbi/increase/models/export.rbi b/rbi/increase/models/export.rbi
index fbea5147..a3f8b2ef 100644
--- a/rbi/increase/models/export.rbi
+++ b/rbi/increase/models/export.rbi
@@ -154,6 +154,25 @@ module Increase
         DASHBOARD_TABLE_CSV =
           T.let(:dashboard_table_csv, Increase::Export::Category::TaggedSymbol)
 
+        # A PDF of an account verification letter.
+        ACCOUNT_VERIFICATION_LETTER =
+          T.let(
+            :account_verification_letter,
+            Increase::Export::Category::TaggedSymbol
+          )
+
+        # A PDF of funding instructions.
+        FUNDING_INSTRUCTIONS =
+          T.let(:funding_instructions, Increase::Export::Category::TaggedSymbol)
+
+        # A PDF of an Internal Revenue Service Form 1099-INT.
+        FORM_1099_INT =
+          T.let(:form_1099_int, Increase::Export::Category::TaggedSymbol)
+
+        # A PDF of an Internal Revenue Service Form 1099-MISC.
+        FORM_1099_MISC =
+          T.let(:form_1099_misc, Increase::Export::Category::TaggedSymbol)
+
         sig do
           override.returns(T::Array[Increase::Export::Category::TaggedSymbol])
         end
diff --git a/rbi/increase/models/export_list_params.rbi b/rbi/increase/models/export_list_params.rbi
index bb1492e5..728c4330 100644
--- a/rbi/increase/models/export_list_params.rbi
+++ b/rbi/increase/models/export_list_params.rbi
@@ -219,6 +219,34 @@ module Increase
               Increase::ExportListParams::Category::In::TaggedSymbol
             )
 
+          # A PDF of an account verification letter.
+          ACCOUNT_VERIFICATION_LETTER =
+            T.let(
+              :account_verification_letter,
+              Increase::ExportListParams::Category::In::TaggedSymbol
+            )
+
+          # A PDF of funding instructions.
+          FUNDING_INSTRUCTIONS =
+            T.let(
+              :funding_instructions,
+              Increase::ExportListParams::Category::In::TaggedSymbol
+            )
+
+          # A PDF of an Internal Revenue Service Form 1099-INT.
+          FORM_1099_INT =
+            T.let(
+              :form_1099_int,
+              Increase::ExportListParams::Category::In::TaggedSymbol
+            )
+
+          # A PDF of an Internal Revenue Service Form 1099-MISC.
+          FORM_1099_MISC =
+            T.let(
+              :form_1099_misc,
+              Increase::ExportListParams::Category::In::TaggedSymbol
+            )
+
           sig do
             override.returns(
               T::Array[Increase::ExportListParams::Category::In::TaggedSymbol]
diff --git a/sig/increase/models/export.rbs b/sig/increase/models/export.rbs
index d786ccd4..64a866d2 100644
--- a/sig/increase/models/export.rbs
+++ b/sig/increase/models/export.rbs
@@ -60,6 +60,10 @@ module Increase
         | :entity_csv
         | :vendor_csv
         | :dashboard_table_csv
+        | :account_verification_letter
+        | :funding_instructions
+        | :form_1099_int
+        | :form_1099_misc
 
       module Category
         extend Increase::Internal::Type::Enum
@@ -88,6 +92,18 @@ module Increase
         # Certain dashboard tables are available as CSV exports. This export cannot be created via the API.
         DASHBOARD_TABLE_CSV: :dashboard_table_csv
 
+        # A PDF of an account verification letter.
+        ACCOUNT_VERIFICATION_LETTER: :account_verification_letter
+
+        # A PDF of funding instructions.
+        FUNDING_INSTRUCTIONS: :funding_instructions
+
+        # A PDF of an Internal Revenue Service Form 1099-INT.
+        FORM_1099_INT: :form_1099_int
+
+        # A PDF of an Internal Revenue Service Form 1099-MISC.
+        FORM_1099_MISC: :form_1099_misc
+
         def self?.values: -> ::Array[Increase::Models::Export::category]
       end
 
diff --git a/sig/increase/models/export_list_params.rbs b/sig/increase/models/export_list_params.rbs
index 51424f27..b8c4bce2 100644
--- a/sig/increase/models/export_list_params.rbs
+++ b/sig/increase/models/export_list_params.rbs
@@ -92,6 +92,10 @@ module Increase
           | :entity_csv
           | :vendor_csv
           | :dashboard_table_csv
+          | :account_verification_letter
+          | :funding_instructions
+          | :form_1099_int
+          | :form_1099_misc
 
         module In
           extend Increase::Internal::Type::Enum
@@ -120,6 +124,18 @@ module Increase
           # Certain dashboard tables are available as CSV exports. This export cannot be created via the API.
           DASHBOARD_TABLE_CSV: :dashboard_table_csv
 
+          # A PDF of an account verification letter.
+          ACCOUNT_VERIFICATION_LETTER: :account_verification_letter
+
+          # A PDF of funding instructions.
+          FUNDING_INSTRUCTIONS: :funding_instructions
+
+          # A PDF of an Internal Revenue Service Form 1099-INT.
+          FORM_1099_INT: :form_1099_int
+
+          # A PDF of an Internal Revenue Service Form 1099-MISC.
+          FORM_1099_MISC: :form_1099_misc
+
           def self?.values: -> ::Array[Increase::Models::ExportListParams::Category::in_]
         end
       end