diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 466df71..37fcefa 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.1.0"
+  ".": "1.0.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..8e21238
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,19 @@
+# Changelog
+
+## [1.0.0](https://github.com/didit-protocol/sdk-java/compare/didit-java-v0.1.0...didit-java-v1.0.0) (2026-10-29)
+
+
+### ⚠ BREAKING CHANGES
+
+* **spec:** the API spec sync changes the SDK surface (nullable fields, removed fields, account.organizations.list returns a page, the session decision response is the SessionDecision component).
+
+### Features
+
+* add bank.account_check (POST /v3/bank/account-check/) and bank_verifications on the decision ([7b3705d](https://github.com/didit-protocol/sdk-java/commit/7b3705dd23e903778a78049633c1129d2ad7d784))
+* **spec:** sync API spec 2026-10-23 ([#6](https://github.com/didit-protocol/sdk-java/issues/6)) ([7e6b5dd](https://github.com/didit-protocol/sdk-java/commit/7e6b5dd85bc424f6fc2c394778131dcb48fda276))
+* **spec:** sync API spec 2026-10-27 ([#13](https://github.com/didit-protocol/sdk-java/issues/13)) ([f9c1bb4](https://github.com/didit-protocol/sdk-java/commit/f9c1bb42234e074234346e19a1df288c18c2b234))
+
+
+### Miscellaneous Chores
+
+* release 1.0.0 ([058812d](https://github.com/didit-protocol/sdk-java/commit/058812d43421cfec22a8b89e8bd9888b600d6fe6))
diff --git a/README.md b/README.md
index 29f3e78..1ff5976 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ Java 11 or newer. Gradle (Kotlin DSL):
 
 <!-- x-release-please-start-version -->
 ```kotlin
-implementation("me.didit:didit-java:0.1.0")
+implementation("me.didit:didit-java:1.0.0")
 ```
 
 Maven:
@@ -20,7 +20,7 @@ Maven:
 <dependency>
   <groupId>me.didit</groupId>
   <artifactId>didit-java</artifactId>
-  <version>0.1.0</version>
+  <version>1.0.0</version>
 </dependency>
 ```
 <!-- x-release-please-end -->
diff --git a/gradle.properties b/gradle.properties
index 7218c5a..578e71d 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,6 +1,6 @@
 group=me.didit
 # x-release-please-start-version
-version=0.1.0
+version=1.0.0
 # x-release-please-end
 # google-java-format (Spotless) runs inside the Gradle JVM and needs javac's internals.
 org.gradle.jvmargs=-Xmx2g -XX:MaxMetaspaceSize=768m -Dfile.encoding=UTF-8 --add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED
diff --git a/src/main/java/me/didit/core/Version.java b/src/main/java/me/didit/core/Version.java
index 922fdbc..8bb5b52 100644
--- a/src/main/java/me/didit/core/Version.java
+++ b/src/main/java/me/didit/core/Version.java
@@ -3,7 +3,7 @@
 /** The SDK version, sent in {@code User-Agent} and {@code X-Didit-Client}. */
 public final class Version {
   /** This SDK's version. */
-  public static final String VERSION = "0.1.0"; // x-release-please-version
+  public static final String VERSION = "1.0.0"; // x-release-please-version
 
   private Version() {}
 }