diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 4bce58a11b6..507912c504e 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.41.0"
+  ".": "1.42.0"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c609901c128..7e7e39ba076 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,17 @@
 # Changelog
 
+## [1.42.0](https://github.com/googleapis/java-genai/compare/v1.41.0...v1.42.0) (2026-02-28)
+
+
+### Features
+
+* Update data types from discovery doc. ([850d527](https://github.com/googleapis/java-genai/commit/850d527dd945a040c2aa9a50f82060c53fde4d64))
+
+
+### Bug Fixes
+
+* initialize comprehensive and curated history in constructor ([f74a426](https://github.com/googleapis/java-genai/commit/f74a426adcf282f726a49b38958c4df3982a2d0d))
+
 ## [1.41.0](https://github.com/googleapis/java-genai/compare/v1.40.0...v1.41.0) (2026-02-26)
 
 
diff --git a/README.md b/README.md
index c92ba9eec8d..11cf14bb663 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ If you're using Maven, add the following to your dependencies:
   <dependency>
     <groupId>com.google.genai</groupId>
     <artifactId>google-genai</artifactId>
-    <version>1.41.0</version>
+    <version>1.42.0</version>
   </dependency>
 </dependencies>
 ```
diff --git a/examples/pom.xml b/examples/pom.xml
index bd073003772..5cb47945543 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -5,7 +5,7 @@
 
   <groupId>com.google.genai.examples</groupId>
   <artifactId>google-genai-examples</artifactId>
-  <version>1.42.0-SNAPSHOT</version><!-- {x-version-update:google-genai:current} -->
+  <version>1.42.0</version><!-- {x-version-update:google-genai:current} -->
   <name>google-genai-examples</name>
 
   <properties>
@@ -13,7 +13,7 @@
     <maven.compiler.source>1.8</maven.compiler.source>
     <maven.compiler.target>1.8</maven.compiler.target>
     <!-- {x-version-update-start:google-genai:current} -->
-    <google-genai.version>1.42.0-SNAPSHOT</google-genai.version>
+    <google-genai.version>1.42.0</google-genai.version>
     <!-- {x-version-update-end} -->
   </properties>
   <build>
diff --git a/pom.xml b/pom.xml
index 67d1776e3c5..ebec1471228 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
   <groupId>com.google.genai</groupId>
   <artifactId>google-genai</artifactId>
   <name>google-genai</name>
-  <version>1.41.0-SNAPSHOT</version><!-- {x-version-update:google-genai:current} -->
+  <version>1.42.0</version><!-- {x-version-update:google-genai:current} -->
   <packaging>jar</packaging>
   <description>
     Java idiomatic SDK for the Gemini Developer APIs and Vertex AI APIs.
diff --git a/src/main/java/com/google/genai/ApiClient.java b/src/main/java/com/google/genai/ApiClient.java
index 64c39d578c3..5474ea5a50d 100644
--- a/src/main/java/com/google/genai/ApiClient.java
+++ b/src/main/java/com/google/genai/ApiClient.java
@@ -55,7 +55,7 @@
 public abstract class ApiClient {
 
   // {x-version-update-start:google-genai:released}
-  private static final String SDK_VERSION = "1.41.0";
+  private static final String SDK_VERSION = "1.42.0";
   // {x-version-update-end:google-genai:released}
   private static final Logger logger = Logger.getLogger(ApiClient.class.getName());
 
diff --git a/versions.txt b/versions.txt
index fa2120c49f6..5b1924c6321 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,4 +1,4 @@
 # Format:
 # module:released-version:current-version
 
-google-genai:1.41.0:1.42.0-SNAPSHOT
+google-genai:1.42.0:1.42.0