diff --git a/.run/NCubeApplication.run.xml b/.run/NCubeApplication.run.xml
index a0958f91..8468ab23 100644
--- a/.run/NCubeApplication.run.xml
+++ b/.run/NCubeApplication.run.xml
@@ -15,6 +15,7 @@
       <option name="environmentVariables" />
     </selectedOptions>
     <option name="SPRING_BOOT_MAIN_CLASS" value="com.cedarsoftware.ncube.NCubeApplication" />
+    <option name="VM_PARAMETERS" value="-Xmx1200m" />
     <method v="2">
       <option name="Make" enabled="true" />
     </method>
diff --git a/README.md b/README.md
index 0a3afb1a..674dc2c4 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ ___
 To include in your project:
 ##### Gradle
 ```groovy
-implementation 'com.cedarsoftware:json-io:4.27.0'
+implementation 'com.cedarsoftware:json-io:4.28.0'
 ```
 
 ##### Maven
@@ -32,7 +32,7 @@ implementation 'com.cedarsoftware:json-io:4.27.0'
  <dependency>
    <groupId>com.cedarsoftware</groupId>
    <artifactId>json-io</artifactId>
-   <version>4.27.0</version>
+   <version>4.28.0</version>
  </dependency>
 ```
 ___
@@ -50,23 +50,23 @@ ___
 >- [ ] **Java Package**: com.cedarsoftware.io
 >- [ ] **Java**: JDK17+ (Class file 52 format, includes module-info.class - multi-release JAR)
 >- [ ] **API**
-   >  - Static methods on [JsonIo](https://www.javadoc.io/doc/com.cedarsoftware/json-io/latest/com/cedarsoftware/io/JsonIo.html): [toJson()](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.27.0/com/cedarsoftware/io/JsonIo.html#toJson(java.lang.Object,com.cedarsoftware.io.WriteOptions)), [toObjects()](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.27.0/com/cedarsoftware/io/JsonIo.html#toObjects(java.lang.String,com.cedarsoftware.io.ReadOptions,java.lang.Class)), [formatJson()](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.27.0/com/cedarsoftware/io/JsonIo.html#formatJson(java.lang.String,com.cedarsoftware.io.ReadOptions,com.cedarsoftware.io.WriteOptions)), [deepCopy()](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.27.0/com/cedarsoftware/io/JsonIo.html#deepCopy(java.lang.Object,com.cedarsoftware.io.ReadOptions,com.cedarsoftware.io.WriteOptions))
+   >  - Static methods on [JsonIo](https://www.javadoc.io/doc/com.cedarsoftware/json-io/latest/com/cedarsoftware/io/JsonIo.html): [toJson()](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.28.0/com/cedarsoftware/io/JsonIo.html#toJson(java.lang.Object,com.cedarsoftware.io.WriteOptions)), [toObjects()](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.28.0/com/cedarsoftware/io/JsonIo.html#toObjects(java.lang.String,com.cedarsoftware.io.ReadOptions,java.lang.Class)), [formatJson()](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.28.0/com/cedarsoftware/io/JsonIo.html#formatJson(java.lang.String,com.cedarsoftware.io.ReadOptions,com.cedarsoftware.io.WriteOptions)), [deepCopy()](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.28.0/com/cedarsoftware/io/JsonIo.html#deepCopy(java.lang.Object,com.cedarsoftware.io.ReadOptions,com.cedarsoftware.io.WriteOptions))
 >  - Use [ReadOptionsBuilder](/user-guide-readOptions.md) and [WriteOptionsBuilder](/user-guide-writeOptions.md) to configure `JsonIo`
->  - Use [JsonReader.ClassFactory](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.27.0/com/cedarsoftware/io/JsonReader.ClassFactory.html) for difficult classes (hard to instantiate & fill)
->  - Use [JsonWriter.JsonClassWriter](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.27.0/com/cedarsoftware/io/JsonWriter.JsonClassWriter.html) to customize the output JSON for a particular class
+>  - Use [JsonReader.ClassFactory](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.28.0/com/cedarsoftware/io/JsonReader.ClassFactory.html) for difficult classes (hard to instantiate & fill)
+>  - Use [JsonWriter.JsonClassWriter](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.28.0/com/cedarsoftware/io/JsonWriter.JsonClassWriter.html) to customize the output JSON for a particular class
 >- [ ] Updates will be 5.1.0, 5.2.0, ...
->### 4.27.0 (current)
->- [ ] **Version**: [4.27.0](https://www.javadoc.io/doc/com.cedarsoftware/json-io/4.27.0/index.html)
+>### 4.28.0 (current)
+>- [ ] **Version**: [4.28.0](https://www.javadoc.io/doc/com.cedarsoftware/json-io/4.28.0/index.html)
 >- [ ] **Bundling**: Both JPMS (Java Platform Module System) and OSGi (Open Service Gateway initiative)
 >- [ ] **Maintained**: Fully
 >- [ ] **Java Package**: com.cedarsoftware.io
 >- [ ] **Java**: JDK1.8+ (Class file 52 format, includes module-info.class - multi-release JAR)
 >- [ ] **API**
->  - Static methods on [JsonIo](https://www.javadoc.io/doc/com.cedarsoftware/json-io/latest/com/cedarsoftware/io/JsonIo.html): [toJson()](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.27.0/com/cedarsoftware/io/JsonIo.html#toJson(java.lang.Object,com.cedarsoftware.io.WriteOptions)), [toObjects()](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.27.0/com/cedarsoftware/io/JsonIo.html#toObjects(java.lang.String,com.cedarsoftware.io.ReadOptions,java.lang.Class)), [formatJson()](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.27.0/com/cedarsoftware/io/JsonIo.html#formatJson(java.lang.String,com.cedarsoftware.io.ReadOptions,com.cedarsoftware.io.WriteOptions)), [deepCopy()](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.27.0/com/cedarsoftware/io/JsonIo.html#deepCopy(java.lang.Object,com.cedarsoftware.io.ReadOptions,com.cedarsoftware.io.WriteOptions))
+>  - Static methods on [JsonIo](https://www.javadoc.io/doc/com.cedarsoftware/json-io/latest/com/cedarsoftware/io/JsonIo.html): [toJson()](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.28.0/com/cedarsoftware/io/JsonIo.html#toJson(java.lang.Object,com.cedarsoftware.io.WriteOptions)), [toObjects()](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.28.0/com/cedarsoftware/io/JsonIo.html#toObjects(java.lang.String,com.cedarsoftware.io.ReadOptions,java.lang.Class)), [formatJson()](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.28.0/com/cedarsoftware/io/JsonIo.html#formatJson(java.lang.String,com.cedarsoftware.io.ReadOptions,com.cedarsoftware.io.WriteOptions)), [deepCopy()](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.28.0/com/cedarsoftware/io/JsonIo.html#deepCopy(java.lang.Object,com.cedarsoftware.io.ReadOptions,com.cedarsoftware.io.WriteOptions))
 >  - Use [ReadOptionsBuilder](/user-guide-readOptions.md) and [WriteOptionsBuilder](/user-guide-writeOptions.md) to configure `JsonIo`
->  - Use [JsonReader.ClassFactory](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.27.0/com/cedarsoftware/io/JsonReader.ClassFactory.html) for difficult classes (hard to instantiate & fill)
->  - Use [JsonWriter.JsonClassWriter](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.27.0/com/cedarsoftware/io/JsonWriter.JsonClassWriter.html) to customize the output JSON for a particular class
->- [ ] Updates will be 4.28.0, 4.29.0, ...
+>  - Use [JsonReader.ClassFactory](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.28.0/com/cedarsoftware/io/JsonReader.ClassFactory.html) for difficult classes (hard to instantiate & fill)
+>  - Use [JsonWriter.JsonClassWriter](https://www.javadoc.io/static/com.cedarsoftware/json-io/4.28.0/com/cedarsoftware/io/JsonWriter.JsonClassWriter.html) to customize the output JSON for a particular class
+>- [ ] Updates will be 4.29.0, 4.30.0, ...
 >### 4.14.x (supported)
 >- [ ] **Version**: [4.14.3](https://www.javadoc.io/doc/com.cedarsoftware/json-io/4.14.3/index.html)
 >- [ ] **Bundling**: Both JPMS (Java Platform Module System) and OSGi (Open Service Gateway initiative)
diff --git a/changelog.md b/changelog.md
index 83b42a3e..5edbfd40 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,4 +1,6 @@
 ### Revision History
+#### 4.28.0
+  * Updated [java-util](https://github.com/jdereg/java-util/blob/master/changelog.md) from `2.14.0` to `2.15.0.`
 #### 4.27.0
   * `ReadOptionsBuilder.addInjectorFactory()` added to allow additional `InjectorFactory's` to be added.
   * `ReadOptionsBuilder.addFieldFilter()` added to allow additional `FieldFilters` to be added.
diff --git a/pom.xml b/pom.xml
index 8d6fe074..9308a28f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
     <groupId>com.cedarsoftware</groupId>
     <artifactId>json-io</artifactId>
     <packaging>bundle</packaging>
-    <version>4.27.0</version>
+    <version>4.28.0</version>
     <description>Java JSON serialization</description>
     <url>https://github.com/jdereg/json-io</url>
 
@@ -37,7 +37,7 @@
         <version.junit-jupiter-params>5.11.1</version.junit-jupiter-params>
         <version.mockito-junit-jupiter>5.14.0</version.mockito-junit-jupiter>
         <version.assertj-core>3.26.3</version.assertj-core>
-        <version.java-util>2.14.0</version.java-util>
+        <version.java-util>2.15.0</version.java-util>
         <version.gson>2.11.0</version.gson>
         <version.jackson-core>2.18.0</version.jackson-core>
         <version.slf4j-api>2.0.13</version.slf4j-api>