diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 95701982e..30bf412b9 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.210.0"
+  ".": "0.211.0"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index 92685b7c7..a76b111f0 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,2 +1,2 @@
 configured_endpoints: 199
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/increase%2Fincrease-4a47b11a0e607e967e5084b9ca0602eca8b9d8fcae288dd554172894b4ae4bc5.yml
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/increase%2Fincrease-cc87cb29bb20cb6bb17818eda6283205740084b0a055539bd6a04945eca539ab.yml
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 95a7695bc..6f98773ce 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 0.211.0 (2025-03-22)
+
+Full Changelog: [v0.210.0...v0.211.0](https://github.com/Increase/increase-python/compare/v0.210.0...v0.211.0)
+
+### Features
+
+* **api:** api update ([#1047](https://github.com/Increase/increase-python/issues/1047)) ([02a8dd8](https://github.com/Increase/increase-python/commit/02a8dd8c9e94f2e6d8f7bca8b259c0a357506a53))
+
 ## 0.210.0 (2025-03-18)
 
 Full Changelog: [v0.209.2...v0.210.0](https://github.com/Increase/increase-python/compare/v0.209.2...v0.210.0)
diff --git a/pyproject.toml b/pyproject.toml
index 7a28a44a5..83a42bc85 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "increase"
-version = "0.210.0"
+version = "0.211.0"
 description = "The official Python library for the increase API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/src/increase/_version.py b/src/increase/_version.py
index 897688c5a..bff435cd0 100644
--- a/src/increase/_version.py
+++ b/src/increase/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "increase"
-__version__ = "0.210.0"  # x-release-please-version
+__version__ = "0.211.0"  # x-release-please-version
diff --git a/src/increase/resources/files.py b/src/increase/resources/files.py
index 148690573..f24643772 100644
--- a/src/increase/resources/files.py
+++ b/src/increase/resources/files.py
@@ -60,6 +60,7 @@ def create(
             "mailed_check_image",
             "check_voucher_image",
             "check_attachment_image",
+            "check_attachment",
             "form_ss_4",
             "identity_document",
             "other",
@@ -100,8 +101,10 @@ def create(
               - `mailed_check_image` - An image of a check that was mailed to a recipient.
               - `check_voucher_image` - An image to be printed on the bottom or voucher of a
                 check that you've requested Increase print.
-              - `check_attachment_image` - An image to be printed on an additional page and
+              - `check_attachment_image` - A document to be printed on an additional page and
                 mailed with a check that you've requested Increase print.
+              - `check_attachment` - A document to be printed on an additional page and mailed
+                with a check that you've requested Increase print.
               - `form_ss_4` - IRS Form SS-4.
               - `identity_document` - An image of a government-issued ID.
               - `other` - A file purpose not covered by any of the other cases.
@@ -286,6 +289,7 @@ async def create(
             "mailed_check_image",
             "check_voucher_image",
             "check_attachment_image",
+            "check_attachment",
             "form_ss_4",
             "identity_document",
             "other",
@@ -326,8 +330,10 @@ async def create(
               - `mailed_check_image` - An image of a check that was mailed to a recipient.
               - `check_voucher_image` - An image to be printed on the bottom or voucher of a
                 check that you've requested Increase print.
-              - `check_attachment_image` - An image to be printed on an additional page and
+              - `check_attachment_image` - A document to be printed on an additional page and
                 mailed with a check that you've requested Increase print.
+              - `check_attachment` - A document to be printed on an additional page and mailed
+                with a check that you've requested Increase print.
               - `form_ss_4` - IRS Form SS-4.
               - `identity_document` - An image of a government-issued ID.
               - `other` - A file purpose not covered by any of the other cases.
diff --git a/src/increase/types/file.py b/src/increase/types/file.py
index f99ab79e9..0107ba9b3 100644
--- a/src/increase/types/file.py
+++ b/src/increase/types/file.py
@@ -48,6 +48,7 @@ class File(BaseModel):
         "mailed_check_image",
         "check_voucher_image",
         "check_attachment_image",
+        "check_attachment",
         "inbound_mail_item",
         "form_1099_int",
         "form_1099_misc",
@@ -83,8 +84,10 @@ class File(BaseModel):
     - `mailed_check_image` - An image of a check that was mailed to a recipient.
     - `check_voucher_image` - An image to be printed on the bottom or voucher of a
       check that you've requested Increase print.
-    - `check_attachment_image` - An image to be printed on an additional page and
+    - `check_attachment_image` - A document to be printed on an additional page and
       mailed with a check that you've requested Increase print.
+    - `check_attachment` - A document to be printed on an additional page and mailed
+      with a check that you've requested Increase print.
     - `inbound_mail_item` - A scanned mail item sent to Increase.
     - `form_1099_int` - IRS Form 1099-INT.
     - `form_1099_misc` - IRS Form 1099-MISC.
diff --git a/src/increase/types/file_create_params.py b/src/increase/types/file_create_params.py
index 05d007974..c4788b37c 100644
--- a/src/increase/types/file_create_params.py
+++ b/src/increase/types/file_create_params.py
@@ -25,6 +25,7 @@ class FileCreateParams(TypedDict, total=False):
             "mailed_check_image",
             "check_voucher_image",
             "check_attachment_image",
+            "check_attachment",
             "form_ss_4",
             "identity_document",
             "other",
@@ -47,8 +48,10 @@ class FileCreateParams(TypedDict, total=False):
     - `mailed_check_image` - An image of a check that was mailed to a recipient.
     - `check_voucher_image` - An image to be printed on the bottom or voucher of a
       check that you've requested Increase print.
-    - `check_attachment_image` - An image to be printed on an additional page and
+    - `check_attachment_image` - A document to be printed on an additional page and
       mailed with a check that you've requested Increase print.
+    - `check_attachment` - A document to be printed on an additional page and mailed
+      with a check that you've requested Increase print.
     - `form_ss_4` - IRS Form SS-4.
     - `identity_document` - An image of a government-issued ID.
     - `other` - A file purpose not covered by any of the other cases.
diff --git a/src/increase/types/file_list_params.py b/src/increase/types/file_list_params.py
index 25ae1bbc8..8b345f5d4 100644
--- a/src/increase/types/file_list_params.py
+++ b/src/increase/types/file_list_params.py
@@ -72,6 +72,7 @@ class CreatedAt(TypedDict, total=False):
                 "mailed_check_image",
                 "check_voucher_image",
                 "check_attachment_image",
+                "check_attachment",
                 "inbound_mail_item",
                 "form_1099_int",
                 "form_1099_misc",