diff --git a/CHANGELOG.md b/CHANGELOG.md
index b161766..7ad1e16 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 # Changelog
 
+## [2.3.0] - 2022-02-05
 - added option `--exclude-empty-texts` (`-Z`)
 
 ## [2.2.2] - 2022-01-23
diff --git a/Readme.md b/Readme.md
index 9e018be..837cfa5 100644
--- a/Readme.md
+++ b/Readme.md
@@ -14,8 +14,8 @@
 ## Install from binary distribution
 
 ```bash
-unzip totalngrams-2.2.1-bin.zip
-export PATH=`pwd`/totalngrams-2.2.1/bin:$PATH
+unzip totalngrams-2.3.0-bin.zip
+export PATH=`pwd`/totalngrams-2.3.0/bin:$PATH
 ```
 
 ## Synopsis
@@ -64,8 +64,8 @@
 FOLDS=16
 BASE="."
 
-for l in "-l"; do #  "-l"
-  for n in $(seq 1 2 3); do
+for l in "-l"; do
+  for n in $(seq 1 3); do
     for f in $(seq 1 $FOLDS); do
       totalngrams\
         --pad \
@@ -126,7 +126,7 @@
 
 ### Prerequisites
 
-* [Java Development Kit (JDK) >= 18](https://www.oracle.com/de/java/technologies/downloads/)
+* [Java Development Kit (JDK) >= 17](https://www.oracle.com/de/java/technologies/downloads/)
 * [Apache Maven](https://maven.apache.org/)
 
 ### Build and install from git
@@ -147,7 +147,7 @@
 **Authors**: 
 * [Marc Kupietz](https://www.ids-mannheim.de/digspra/personal/kupietz.html)
 
-Copyright (c) 2022, [Leibniz Institute for the German Language](http://www.ids-mannheim.de/), Mannheim, Germany
+Copyright (c) 2023, [Leibniz Institute for the German Language](http://www.ids-mannheim.de/), Mannheim, Germany
 
 This package is published under the [Apache 2.0 License](LICENSE).
 
diff --git a/pom.xml b/pom.xml
index c02b962..9953fed 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>groupId</groupId>
     <artifactId>totalngrams</artifactId>
-    <version>2.2.3</version>
+    <version>2.3.0</version>
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
diff --git a/src/main/java/org/ids_mannheim/TotalNGrams.java b/src/main/java/org/ids_mannheim/TotalNGrams.java
index 0823c32..8dc8c65 100644
--- a/src/main/java/org/ids_mannheim/TotalNGrams.java
+++ b/src/main/java/org/ids_mannheim/TotalNGrams.java
@@ -17,7 +17,7 @@
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 
-@CommandLine.Command(mixinStandardHelpOptions = true, name = "totalngrams", version = "2.2.3", description = "sum ngram counts from KorAP-XML, CoNLL-U files and frequency lists")
+@CommandLine.Command(mixinStandardHelpOptions = true, name = "totalngrams", version = "2.3.0", description = "sum ngram counts from KorAP-XML, CoNLL-U files and frequency lists")
 
 public class TotalNGrams implements Callable<Integer> {
     static public final Logger logger;