diff --git a/.codegen.json b/.codegen.json
index 939978d5d..43b74d9a5 100644
--- a/.codegen.json
+++ b/.codegen.json
@@ -1 +1 @@
-{ "engineHash": "41c28e1", "specHash": "1617aaf", "version": "5.2.0" }
+{ "engineHash": "41c28e1", "specHash": "1617aaf", "version": "5.3.0" }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a38cb3e36..81e597c1f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,21 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
+## [5.3.0](https://github.com/box/box-java-sdk/compare/v5.2.0...v5.3.0) (2025-12-19)
+
+
+### New Features and Enhancements:
+
+* **boxsdkgen:** add Metadata Taxonomies api (box/box-openapi[#569](https://github.com/box/box-java-sdk/issues/569)) ([#1629](https://github.com/box/box-java-sdk/issues/1629)) ([7236f16](https://github.com/box/box-java-sdk/commit/7236f16bf39a3376eaad4ba6e143633cc5c2f4b2))
+* **boxsdkgen:** text input validation for Box Sign (box/box-openapi[#568](https://github.com/box/box-java-sdk/issues/568)) ([#1623](https://github.com/box/box-java-sdk/issues/1623)) ([a5d74ee](https://github.com/box/box-java-sdk/commit/a5d74eeb4b9b053ab00ebf33cf4f9b862ea4b586))
+* **boxsdkgen:** treat `nullable` fields as Optional (box/box-codegen[#906](https://github.com/box/box-java-sdk/issues/906)) ([#1633](https://github.com/box/box-java-sdk/issues/1633)) ([e14e97b](https://github.com/box/box-java-sdk/commit/e14e97bb7a53c967851f7b92bc43400bdfc8da8b))
+
+
+### Bug Fixes:
+
+* **boxsdkgen:** add taxonomy to Metadata Field (read) definition (box/box-openapi[#572](https://github.com/box/box-java-sdk/issues/572)) ([#1643](https://github.com/box/box-java-sdk/issues/1643)) ([492684e](https://github.com/box/box-java-sdk/commit/492684e45730b7f56bc1539c4086be45b30127ae))
+* **boxsdkgen:** fix `RetryAfter` function when there's no `Retry-After` header (box/box-codegen[#903](https://github.com/box/box-java-sdk/issues/903)) ([#1621](https://github.com/box/box-java-sdk/issues/1621)) ([af4861f](https://github.com/box/box-java-sdk/commit/af4861f832e03d68614d6bd3c9852ca48a49ae0f))
+
 ## [5.2.0](https://github.com/box/box-java-sdk/compare/v5.1.0...v5.2.0) (2025-12-10)
 
 
diff --git a/build.gradle b/build.gradle
index 24179e119..be865eb4d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -15,7 +15,7 @@ sourceCompatibility = 1.8
 
 group = "com.box"
 archivesBaseName = "box-java-sdk"
-version = "5.2.0"
+version = "5.3.0"
 
 java {
     withJavadocJar()
diff --git a/src/main/java/com/box/sdk/BoxAPIConnection.java b/src/main/java/com/box/sdk/BoxAPIConnection.java
index f11f72985..719724d83 100644
--- a/src/main/java/com/box/sdk/BoxAPIConnection.java
+++ b/src/main/java/com/box/sdk/BoxAPIConnection.java
@@ -91,7 +91,7 @@ public class BoxAPIConnection {
   private static final String BOX_NOTIFICATIONS_HEADER = "Box-Notifications";
 
   private static final String JAVA_VERSION = System.getProperty("java.version");
-  private static final String SDK_VERSION = "5.2.0";
+  private static final String SDK_VERSION = "5.3.0";
 
   /**
    * The amount of buffer time, in milliseconds, to use when determining if an access token should
diff --git a/src/main/java/com/box/sdkgen/networking/version/Version.java b/src/main/java/com/box/sdkgen/networking/version/Version.java
index f67f58aed..853b3e9f2 100644
--- a/src/main/java/com/box/sdkgen/networking/version/Version.java
+++ b/src/main/java/com/box/sdkgen/networking/version/Version.java
@@ -3,6 +3,6 @@
 public class Version {
 
   public static String getVersion() {
-    return "5.2.0";
+    return "5.3.0";
   }
 }