diff --git a/package.json b/package.json
index a1fdab7c4..5140cec0a 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@effekt-lang/effekt",
   "author": "Jonathan Brachthäuser",
-  "version": "0.8.0",
+  "version": "0.9.0",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/effekt-lang/effekt.git"
diff --git a/pom.xml b/pom.xml
index b37307a3e..f3c36bc4c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -7,7 +7,7 @@
  <groupId>de.bstudios</groupId>
  <artifactId>Effekt</artifactId>
  <name>Effekt</name>
- <version>0.8.0</version>
+ <version>0.9.0</version>
  <modelVersion>4.0.0</modelVersion>
 
    <dependencies>
diff --git a/project/EffektVersion.scala b/project/EffektVersion.scala
index 31e30098a..afaa60c42 100644
--- a/project/EffektVersion.scala
+++ b/project/EffektVersion.scala
@@ -1,4 +1,4 @@
 // Don't change this file without changing the CI too!
 import sbt.*
 import sbt.Keys.*
-object EffektVersion { lazy val effektVersion = "0.8.0" }
+object EffektVersion { lazy val effektVersion = "0.9.0" }