diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 763462fa..43fd5a73 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -9,9 +9,7 @@
   "postCreateCommand": "yarn install",
   "customizations": {
     "vscode": {
-      "extensions": [
-        "esbenp.prettier-vscode"
-      ]
+      "extensions": ["esbenp.prettier-vscode"]
     }
   }
 }
diff --git a/.eslintcache b/.eslintcache
new file mode 100644
index 00000000..53667580
--- /dev/null
+++ b/.eslintcache
@@ -0,0 +1 @@
+[{"/home/tempuser-wcfu2u/run/codegen-output/orb/orb-node/src/resources/subscription-changes.ts":"1","/home/tempuser-wcfu2u/run/codegen-output/orb/orb-node/tests/api-resources/subscription-changes.test.ts":"2"},{"size":11543,"mtime":1759170667831},{"size":3488,"mtime":1759170667831}]
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index d98d51a8..2412bb77 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,4 +7,5 @@ dist
 dist-deno
 /*.tgz
 .idea/
+.eslintcache
 
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index af6c62f4..c99ba658 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "5.11.0"
+  ".": "5.12.0"
 }
diff --git a/.stats.yml b/.stats.yml
index d522ff7b..b0dfd8e3 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 118
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/orb%2Forb-42aa43f3893eef31a351e066bf0cf8c56da8c857ccbb45eb7dd58739ad43bd86.yml
-openapi_spec_hash: e6b8c1e707036539d88a7b79af864a49
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/orb%2Forb-c075f748a7de8ecdccf11a8f2374682b0efd84f1318147274a838bf2fdd73b58.yml
+openapi_spec_hash: ae918b8f348f1b7d3252a59dac36c453
 config_hash: 1f73a949b649ecfe6ec68ba1bb459dc2
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 46b1d17c..f5ed2e84 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,26 @@
 # Changelog
 
+## 5.12.0 (2025-09-29)
+
+Full Changelog: [v5.11.0...v5.12.0](https://github.com/orbcorp/orb-node/compare/v5.11.0...v5.12.0)
+
+### Features
+
+* **api:** api update ([b0d5c86](https://github.com/orbcorp/orb-node/commit/b0d5c86e281ce0b40e24ce8cebc236d966118142))
+
+
+### Performance Improvements
+
+* faster formatting ([50c7725](https://github.com/orbcorp/orb-node/commit/50c77253c12be122ea838a3c00542f638713b2e5))
+
+
+### Chores
+
+* **internal:** codegen related update ([f7e1b19](https://github.com/orbcorp/orb-node/commit/f7e1b190045dc737efee567fa1e8846f842a1315))
+* **internal:** fix incremental formatting in some cases ([e4ce871](https://github.com/orbcorp/orb-node/commit/e4ce87131ac73f953c2b062a7bc6b74fd598c040))
+* **internal:** ignore .eslintcache ([ed5c44b](https://github.com/orbcorp/orb-node/commit/ed5c44b015bfc48032e2950d49fb547b48decc76))
+* **internal:** remove deprecated `compilerOptions.baseUrl` from tsconfig.json ([9da5396](https://github.com/orbcorp/orb-node/commit/9da53961a69eedcb3ed6178f91992bc7dce5ed68))
+
 ## 5.11.0 (2025-09-19)
 
 Full Changelog: [v5.10.0...v5.11.0](https://github.com/orbcorp/orb-node/compare/v5.10.0...v5.11.0)
diff --git a/package.json b/package.json
index eaacb393..697b516f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "orb-billing",
-  "version": "5.11.0",
+  "version": "5.12.0",
   "description": "The official TypeScript library for the Orb API",
   "author": "Orb <team@withorb.com>",
   "types": "dist/index.d.ts",
diff --git a/release-please-config.json b/release-please-config.json
index 624ed99e..1ebd0bde 100644
--- a/release-please-config.json
+++ b/release-please-config.json
@@ -60,8 +60,5 @@
     }
   ],
   "release-type": "node",
-  "extra-files": [
-    "src/version.ts",
-    "README.md"
-  ]
+  "extra-files": ["src/version.ts", "README.md"]
 }
diff --git a/scripts/fast-format b/scripts/fast-format
new file mode 100755
index 00000000..8a8e9d59
--- /dev/null
+++ b/scripts/fast-format
@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+echo "Script started with $# arguments"
+echo "Arguments: $*"
+echo "Script location: $(dirname "$0")"
+
+cd "$(dirname "$0")/.."
+echo "Changed to directory: $(pwd)"
+
+if [ $# -eq 0 ]; then
+    echo "Usage: $0 <file-with-paths> [additional-formatter-args...]"
+    echo "The file should contain one file path per line"
+    exit 1
+fi
+
+FILE_LIST="$1"
+
+echo "Looking for file: $FILE_LIST"
+
+if [ ! -f "$FILE_LIST" ]; then
+    echo "Error: File '$FILE_LIST' not found"
+    exit 1
+fi
+
+echo "==> Running eslint --fix"
+ESLINT_FILES="$(grep '\.ts$' "$FILE_LIST" || true)"
+if ! [ -z "$ESLINT_FILES" ]; then
+   echo "$ESLINT_FILES" | ESLINT_USE_FLAT_CONFIG="false" xargs ./node_modules/.bin/eslint --cache --fix
+fi
+
+echo "==> Running prettier --write"
+# format things eslint didn't
+PRETTIER_FILES="$(grep '\.\(js\|json\)$' "$FILE_LIST" || true)"
+if ! [ -z "$PRETTIER_FILES" ]; then
+   echo "$PRETTIER_FILES" | xargs ./node_modules/.bin/prettier \
+      --write --cache --cache-strategy metadata --no-error-on-unmatched-pattern \
+      '!**/dist' '!**/*.ts' '!**/*.mts' '!**/*.cts' '!**/*.js' '!**/*.mjs' '!**/*.cjs'
+fi
diff --git a/src/resources/subscription-changes.ts b/src/resources/subscription-changes.ts
index 668da6a0..7b4ea301 100644
--- a/src/resources/subscription-changes.ts
+++ b/src/resources/subscription-changes.ts
@@ -321,7 +321,14 @@ export interface SubscriptionChangeApplyParams {
   description?: string | null;
 
   /**
-   * Amount already collected to apply to the customer's balance.
+   * Mark all pending invoices that are payable as paid. If amount is also provided,
+   * mark as paid and credit the difference to the customer's balance.
+   */
+  mark_as_paid?: boolean | null;
+
+  /**
+   * Amount already collected to apply to the customer's balance. If mark_as_paid is
+   * also provided, credit the difference to the customer's balance.
    */
   previously_collected_amount?: string | null;
 }
diff --git a/src/version.ts b/src/version.ts
index 5c2d9a75..5ae28544 100644
--- a/src/version.ts
+++ b/src/version.ts
@@ -1 +1 @@
-export const VERSION = '5.11.0'; // x-release-please-version
+export const VERSION = '5.12.0'; // x-release-please-version
diff --git a/tests/api-resources/subscription-changes.test.ts b/tests/api-resources/subscription-changes.test.ts
index e64703c3..84a12de9 100644
--- a/tests/api-resources/subscription-changes.test.ts
+++ b/tests/api-resources/subscription-changes.test.ts
@@ -50,7 +50,11 @@ describe('resource subscriptionChanges', () => {
     await expect(
       client.subscriptionChanges.apply(
         'subscription_change_id',
-        { description: 'description', previously_collected_amount: 'previously_collected_amount' },
+        {
+          description: 'description',
+          mark_as_paid: true,
+          previously_collected_amount: 'previously_collected_amount',
+        },
         { path: '/_stainless_unknown_path' },
       ),
     ).rejects.toThrow(Orb.NotFoundError);
diff --git a/tsconfig.build.json b/tsconfig.build.json
index f9dae055..fea18611 100644
--- a/tsconfig.build.json
+++ b/tsconfig.build.json
@@ -5,8 +5,8 @@
   "compilerOptions": {
     "rootDir": "./dist/src",
     "paths": {
-      "orb-billing/*": ["dist/src/*"],
-      "orb-billing": ["dist/src/index.ts"],
+      "orb-billing/*": ["./dist/src/*"],
+      "orb-billing": ["./dist/src/index.ts"]
     },
     "noEmit": false,
     "declaration": true,
diff --git a/tsconfig.json b/tsconfig.json
index 653818c4..f684c28b 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -7,11 +7,10 @@
     "module": "commonjs",
     "moduleResolution": "node",
     "esModuleInterop": true,
-    "baseUrl": "./",
     "paths": {
-      "orb-billing/_shims/auto/*": ["src/_shims/auto/*-node"],
-      "orb-billing/*": ["src/*"],
-      "orb-billing": ["src/index.ts"]
+      "orb-billing/_shims/auto/*": ["./src/_shims/auto/*-node"],
+      "orb-billing/*": ["./src/*"],
+      "orb-billing": ["./src/index.ts"]
     },
     "noEmit": true,
 
@@ -32,7 +31,7 @@
     "noUncheckedIndexedAccess": true,
     "noImplicitOverride": true,
     "noPropertyAccessFromIndexSignature": true,
-		"isolatedModules": false,
+    "isolatedModules": false,
 
     "skipLibCheck": true
   }