diff --git a/README.md b/README.md
index d99e568..1bb1af7 100644
--- a/README.md
+++ b/README.md
@@ -10,12 +10,12 @@ It encapsulates the cross-compiled Java code from **LIBSVM** behind an object-or
 
 To use the latest release of **zlibsvm**, please use the following snippet in your `pom.xml`
 
-#### Java 11+
+#### Java 17+
 ```xml
     <dependency>
         <groupId>de.hs-heilbronn.mi</groupId>
         <artifactId>zlibsvm-core</artifactId>
-        <version>2.0.9</version>
+        <version>2.1.0</version>
     </dependency>
 ```
 
@@ -91,40 +91,21 @@ First of all, you need to implement your custom `SvmDocument` and a custom `SvmF
 ```
 
 ```java
-     public class SvmFeatureImpl implements SvmFeature {
-     
-         private int index;
-         private double value;
-     
-         public SvmFeatureImpl(int index, double value) {
-             this.index = index;
-             this.value = value;
-         }
-     
-         public int getIndex() {
-             return index;
-         }
-     
-         public double getValue() {
-             return value;
-         }
-     
-         public void setIndex(int index) {
-             this.index = index;
-     
-         }
-     
-         public void setValue(double value) {
-             this.value = value;
-     
-         }
-     
-         @Override
-         public int compareTo(SvmFeature o) {
-             throw new UnsupportedOperationException("TODO: Implement this method for real use-cases");
-         }
-     }
-      
+public record SvmFeatureImpl(int index, double value) implements SvmFeature {
+
+    public int getIndex() {
+        return index;
+    }
+
+    public double getValue() {
+        return value;
+    }
+
+    @Override
+    public int compareTo(SvmFeature o) {
+        return Integer.compare(getIndex(), o.getIndex());
+    }
+}
 ```
 
 To obtain an `SvmModel` the SVM needs to be trained. This is done via an `SvmConfigurationImpl.Builder()`, which is used to specify your custom SVM configuration.
diff --git a/pom.xml b/pom.xml
index 98411e7..65c4ac7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -7,7 +7,7 @@
     <groupId>de.hs-heilbronn.mi</groupId>
     <artifactId>zlibsvm</artifactId>
     <packaging>pom</packaging>
-    <version>2.1.0-SNAPSHOT</version>
+    <version>2.1.0</version>
 
     <name>zlibsvm</name>
     <description>A Java binding for the famous LIBSVM library</description>
@@ -78,7 +78,7 @@
         <maven.compile.encoding>UTF-8</maven.compile.encoding>
         <maven.compiler.target>${java.target}</maven.compiler.target>
 
-        <zlibsvm.version>2.1.0-SNAPSHOT</zlibsvm.version>
+        <zlibsvm.version>2.1.0</zlibsvm.version>
         <libsvm.version>3.31</libsvm.version>
         <!-- apache commons stuff -->
         <commons.lang3.version>3.13.0</commons.lang3.version>
diff --git a/zlibsvm-api/pom.xml b/zlibsvm-api/pom.xml
index aad8aa2..4a2b630 100644
--- a/zlibsvm-api/pom.xml
+++ b/zlibsvm-api/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>de.hs-heilbronn.mi</groupId>
         <artifactId>zlibsvm</artifactId>
-        <version>2.1.0-SNAPSHOT</version>
+        <version>2.1.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/zlibsvm-core/pom.xml b/zlibsvm-core/pom.xml
index 97049a4..117db0c 100644
--- a/zlibsvm-core/pom.xml
+++ b/zlibsvm-core/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>de.hs-heilbronn.mi</groupId>
         <artifactId>zlibsvm</artifactId>
-        <version>2.1.0-SNAPSHOT</version>
+        <version>2.1.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>