diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 6b7b74c..da59f99 100755
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.3.0"
+  ".": "0.4.0"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 75e668e..6b9c768 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,24 @@
 # Changelog
 
+## 0.4.0 (2024-11-06)
+
+Full Changelog: [v0.3.0...v0.4.0](https://github.com/braintrustdata/braintrust-kotlin/compare/v0.3.0...v0.4.0)
+
+### Features
+
+* **api:** api update ([#50](https://github.com/braintrustdata/braintrust-kotlin/issues/50)) ([5e52131](https://github.com/braintrustdata/braintrust-kotlin/commit/5e521318ca6b5c34c75e917f1a5e42d086b2278d))
+* **api:** api update ([#52](https://github.com/braintrustdata/braintrust-kotlin/issues/52)) ([c8a8e0e](https://github.com/braintrustdata/braintrust-kotlin/commit/c8a8e0e5196677b4e49038b5db881b1b01c3157d))
+* **api:** api update ([#53](https://github.com/braintrustdata/braintrust-kotlin/issues/53)) ([b3c1bb2](https://github.com/braintrustdata/braintrust-kotlin/commit/b3c1bb2f7b82097792866386b22150e7b3b11b5a))
+* **api:** api update ([#54](https://github.com/braintrustdata/braintrust-kotlin/issues/54)) ([9a85a86](https://github.com/braintrustdata/braintrust-kotlin/commit/9a85a862e084f405f6497c4f733a260af8a83872))
+
+
+### Chores
+
+* **api:** manual updates ([#58](https://github.com/braintrustdata/braintrust-kotlin/issues/58)) ([a98c90c](https://github.com/braintrustdata/braintrust-kotlin/commit/a98c90c8a5e47b23a1346e3e5b476006011dc3e2))
+* rebuild project due to codegen change ([#55](https://github.com/braintrustdata/braintrust-kotlin/issues/55)) ([1aff44c](https://github.com/braintrustdata/braintrust-kotlin/commit/1aff44cfbfdf19e35476dfcb7734aaa3eb00c2b0))
+* rebuild project due to codegen change ([#56](https://github.com/braintrustdata/braintrust-kotlin/issues/56)) ([e16106b](https://github.com/braintrustdata/braintrust-kotlin/commit/e16106b4164c1a8a3dc854c30582880cbbcf1169))
+* rebuild project due to codegen change ([#57](https://github.com/braintrustdata/braintrust-kotlin/issues/57)) ([3a5fc1c](https://github.com/braintrustdata/braintrust-kotlin/commit/3a5fc1c9ac893651cbf5406df0b00af745f9665a))
+
 ## 0.3.0 (2024-10-01)
 
 Full Changelog: [v0.2.0...v0.3.0](https://github.com/braintrustdata/braintrust-kotlin/compare/v0.2.0...v0.3.0)
diff --git a/README.md b/README.md
index 6c18971..32d2377 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ The REST API documentation can be found on [www.braintrustdata.com](https://www
 <!-- x-release-please-start-version -->
 
 ```kotlin
-implementation("com.braintrustdata.api:braintrust-kotlin:0.3.0")
+implementation("com.braintrustdata.api:braintrust-kotlin:0.4.0")
 ```
 
 #### Maven
@@ -30,7 +30,7 @@ implementation("com.braintrustdata.api:braintrust-kotlin:0.3.0")
 <dependency>
     <groupId>com.braintrustdata.api</groupId>
     <artifactId>braintrust-kotlin</artifactId>
-    <version>0.3.0</version>
+    <version>0.4.0</version>
 </dependency>
 ```
 
diff --git a/build.gradle.kts b/build.gradle.kts
index ce5f3ab..b30cdaf 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -4,7 +4,7 @@ plugins {
 
 allprojects {
     group = "com.braintrustdata.api"
-    version = "0.3.0" // x-release-please-version
+    version = "0.4.0" // x-release-please-version
 }