diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index b5441c013..27353849a 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "4.38.0"
+  ".": "4.38.1"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 069aa171f..9e0f99a06 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 4.38.1 (2024-04-18)
+
+Full Changelog: [v4.38.0...v4.38.1](https://github.com/openai/openai-node/compare/v4.38.0...v4.38.1)
+
+### Bug Fixes
+
+* **api:** correct types for attachments ([#783](https://github.com/openai/openai-node/issues/783)) ([6893631](https://github.com/openai/openai-node/commit/6893631334f75e232ba130f5dd67f1230b1e5fa0))
+
 ## 4.38.0 (2024-04-18)
 
 Full Changelog: [v4.37.1...v4.38.0](https://github.com/openai/openai-node/compare/v4.37.1...v4.38.0)
diff --git a/README.md b/README.md
index dade8aa9c..cbc719a7c 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ You can import in Deno via:
 <!-- x-release-please-start-version -->
 
 ```ts
-import OpenAI from 'https://deno.land/x/openai@v4.38.0/mod.ts';
+import OpenAI from 'https://deno.land/x/openai@v4.38.1/mod.ts';
 ```
 
 <!-- x-release-please-end -->
diff --git a/build-deno b/build-deno
index 8706c6633..0c7e2f7c1 100755
--- a/build-deno
+++ b/build-deno
@@ -14,7 +14,7 @@ This is a build produced from https://github.com/openai/openai-node – please g
 Usage:
 
 \`\`\`ts
-import OpenAI from "https://deno.land/x/openai@v4.38.0/mod.ts";
+import OpenAI from "https://deno.land/x/openai@v4.38.1/mod.ts";
 
 const client = new OpenAI();
 \`\`\`
diff --git a/package.json b/package.json
index b331e024f..a1ef89c27 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "openai",
-  "version": "4.38.0",
+  "version": "4.38.1",
   "description": "The official TypeScript library for the OpenAI API",
   "author": "OpenAI <support@openai.com>",
   "types": "dist/index.d.ts",
diff --git a/src/version.ts b/src/version.ts
index e36007fb9..dac71224d 100644
--- a/src/version.ts
+++ b/src/version.ts
@@ -1 +1 @@
-export const VERSION = '4.38.0'; // x-release-please-version
+export const VERSION = '4.38.1'; // x-release-please-version