diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7e1db6f..833e562 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Changelog
 
+## 2.1.0.9000
+
+
 ## 2.1.0
 
 * GitHub CI test workflow added
diff --git a/Readme.md b/Readme.md
index c5e0b57..76b5306 100644
--- a/Readme.md
+++ b/Readme.md
@@ -43,7 +43,7 @@
 
 #### Split into tokens
 ```
-$ echo 'This is a sentence. This is a second sentence.' | java -jar target/KorAP-Tokenizer-2.1.0-standalone.jar
+$ echo 'This is a sentence. This is a second sentence.' | java -jar target/KorAP-Tokenizer-2.1.0.9000-standalone.jar
 This
 is
 a
@@ -59,7 +59,7 @@
 ```
 #### Split into tokens and sentences
 ```
-$ echo 'This is a sentence. This is a second sentence.' | java -jar target/KorAP-Tokenizer-2.1.0-standalone.jar -s
+$ echo 'This is a sentence. This is a second sentence.' | java -jar target/KorAP-Tokenizer-2.1.0.9000-standalone.jar -s
 This
 is
 a
@@ -80,7 +80,7 @@
 In order to end a text, flush the output and reset the character position, an EOT character (0x04) can be used.
 ```
 $ echo -n -e 'This is a text.\x0a\x04\x0aAnd this is another text.\n\x04\n' |\
-     java -jar target/KorAP-Tokenizer-2.1.0-standalone.jar  --positions
+     java -jar target/KorAP-Tokenizer-2.1.0.9000-standalone.jar  --positions
 This
 is
 a
@@ -98,7 +98,7 @@
 #### Print token and sentence offset
 ```
 echo -n -e ' This ist a start of a text. And this is a sentence!!! But what the hack????\x0a\x04\x0aAnd this is another text.'  |\
-   java -jar target/KorAP-Tokenizer-2.1.0-standalone.jar --no-tokens --positions --sentence-boundaries
+   java -jar target/KorAP-Tokenizer-2.1.0.9000-standalone.jar --no-tokens --positions --sentence-boundaries
 1 5 6 9 10 11 12 17 18 20 21 22 23 27 27 28 29 32 33 37 38 40 41 42 43 51 51 54 55 58 59 63 64 67 68 72 72 76
 1 28 29 54 55 76
 0 3 4 8 9 11 12 19 20 24 24 25
diff --git a/pom.xml b/pom.xml
index 3ddf10c..7d28ec4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>groupId</groupId>
     <artifactId>KorAP-Tokenizer</artifactId>
-    <version>2.1.0</version>
+    <version>2.1.0.9000</version>
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
diff --git a/src/main/java/de/ids_mannheim/korap/tokenizer/Main.java b/src/main/java/de/ids_mannheim/korap/tokenizer/Main.java
index 849900d..84ad44c 100644
--- a/src/main/java/de/ids_mannheim/korap/tokenizer/Main.java
+++ b/src/main/java/de/ids_mannheim/korap/tokenizer/Main.java
@@ -14,7 +14,7 @@
 import java.util.stream.Collectors;
 
 @CommandLine.Command(mixinStandardHelpOptions = true,
-        name = "koraptokenizer", version = "2.1.0", description = "Tokenizes (and sentence splits) text input.")
+        name = "koraptokenizer", version = "2.1.0.9000", description = "Tokenizes (and sentence splits) text input.")
 public class Main implements Callable<Integer> {
 
     public final String DEFAULT_LANGUAGE = "de";