diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9f556b9a3..68a2c07ed 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 Note: version releases in the 0.x.y range may introduce breaking changes.
 
-## [unreleased]
+## [2.9.0]
  ### Added 
  ### Fixed 
 
@@ -385,4 +385,4 @@ Note: version releases in the 0.x.y range may introduce breaking changes.
 [2.6.0]: https://github.com/ehrbase/openEHR_SDK/compare/v2.5.0...v2.6.0
 [2.7.0]: https://github.com/ehrbase/openEHR_SDK/compare/v2.6.0...v2.7.0
 [2.8.0]: https://github.com/ehrbase/openEHR_SDK/compare/v2.7.0...v2.8.0
-[unreleased]: https://github.com/ehrbase/openEHR_SDK/compare/v2.8.0...HEAD
+[2.9.0]: https://github.com/ehrbase/openEHR_SDK/compare/v2.8.0...v2.9.0
diff --git a/aql/pom.xml b/aql/pom.xml
index 661f72357..0f4ca2952 100644
--- a/aql/pom.xml
+++ b/aql/pom.xml
@@ -25,7 +25,7 @@
     <parent>
         <groupId>org.ehrbase.openehr.sdk</groupId>
         <artifactId>sdk-parent</artifactId>
-        <version>2.9.0-SNAPSHOT</version>
+        <version>2.9.0</version>
     </parent>
 
     <artifactId>aql</artifactId>
diff --git a/bom/pom.xml b/bom/pom.xml
index 0f8484b76..a1c8c2f0e 100644
--- a/bom/pom.xml
+++ b/bom/pom.xml
@@ -8,7 +8,7 @@
 
     <artifactId>bom</artifactId>
     <groupId>org.ehrbase.openehr.sdk</groupId>
-    <version>2.9.0-SNAPSHOT</version>
+    <version>2.9.0</version>
     <packaging>pom</packaging>
 
     <name>openEHR SDK</name>
diff --git a/client/pom.xml b/client/pom.xml
index 38a0ac511..5b0808359 100644
--- a/client/pom.xml
+++ b/client/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>org.ehrbase.openehr.sdk</groupId>
         <artifactId>sdk-parent</artifactId>
-        <version>2.9.0-SNAPSHOT</version>
+        <version>2.9.0</version>
     </parent>
 
     <artifactId>client</artifactId>
diff --git a/example-generator/pom.xml b/example-generator/pom.xml
index 13cf3d519..78b079750 100644
--- a/example-generator/pom.xml
+++ b/example-generator/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>sdk-parent</artifactId>
         <groupId>org.ehrbase.openehr.sdk</groupId>
-        <version>2.9.0-SNAPSHOT</version>
+        <version>2.9.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/generator-commons/pom.xml b/generator-commons/pom.xml
index f5ca2cb47..fc888b582 100644
--- a/generator-commons/pom.xml
+++ b/generator-commons/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.ehrbase.openehr.sdk</groupId>
         <artifactId>sdk-parent</artifactId>
-        <version>2.9.0-SNAPSHOT</version>
+        <version>2.9.0</version>
     </parent>
 
     <artifactId>generator-commons</artifactId>
diff --git a/generator-maven-plugin/pom.xml b/generator-maven-plugin/pom.xml
index 3353b347d..1cdaf54e2 100644
--- a/generator-maven-plugin/pom.xml
+++ b/generator-maven-plugin/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <artifactId>sdk-parent</artifactId>
     <groupId>org.ehrbase.openehr.sdk</groupId>
-    <version>2.9.0-SNAPSHOT</version>
+    <version>2.9.0</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
diff --git a/generator/pom.xml b/generator/pom.xml
index 22ef50c27..3848d3e5c 100644
--- a/generator/pom.xml
+++ b/generator/pom.xml
@@ -25,7 +25,7 @@
     <parent>
         <groupId>org.ehrbase.openehr.sdk</groupId>
         <artifactId>sdk-parent</artifactId>
-        <version>2.9.0-SNAPSHOT</version>
+        <version>2.9.0</version>
     </parent>
 
     <artifactId>generator</artifactId>
diff --git a/opt-1.4/pom.xml b/opt-1.4/pom.xml
index ce6b33b8d..27a13dd7f 100644
--- a/opt-1.4/pom.xml
+++ b/opt-1.4/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>org.ehrbase.openehr.sdk</groupId>
         <artifactId>sdk-parent</artifactId>
-        <version>2.9.0-SNAPSHOT</version>
+        <version>2.9.0</version>
     </parent>
 
     <artifactId>opt-1.4</artifactId>
diff --git a/pom.xml b/pom.xml
index 2444545db..fbcf29660 100644
--- a/pom.xml
+++ b/pom.xml
@@ -25,13 +25,13 @@
     <parent>
         <groupId>org.ehrbase.openehr.sdk</groupId>
         <artifactId>bom</artifactId>
-        <version>2.9.0-SNAPSHOT</version>
+        <version>2.9.0</version>
         <relativePath>./bom/pom.xml</relativePath>
     </parent>
 
     <groupId>org.ehrbase.openehr.sdk</groupId>
     <artifactId>sdk-parent</artifactId>
-    <version>2.9.0-SNAPSHOT</version>
+    <version>2.9.0</version>
     <packaging>pom</packaging>
     <name>openEHR SDK</name>
 
diff --git a/response-dto/pom.xml b/response-dto/pom.xml
index 84ee610c6..f295f2ff0 100644
--- a/response-dto/pom.xml
+++ b/response-dto/pom.xml
@@ -26,7 +26,7 @@
   <parent>
     <groupId>org.ehrbase.openehr.sdk</groupId>
     <artifactId>sdk-parent</artifactId>
-    <version>2.9.0-SNAPSHOT</version>
+    <version>2.9.0</version>
   </parent>
 
   <artifactId>response-dto</artifactId>
diff --git a/serialisation/pom.xml b/serialisation/pom.xml
index cf519be01..a392de8fb 100644
--- a/serialisation/pom.xml
+++ b/serialisation/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>org.ehrbase.openehr.sdk</groupId>
         <artifactId>sdk-parent</artifactId>
-        <version>2.9.0-SNAPSHOT</version>
+        <version>2.9.0</version>
     </parent>
 
     <artifactId>serialisation</artifactId>
diff --git a/serialisation_conformance_test/pom.xml b/serialisation_conformance_test/pom.xml
index cad915d8f..f5f522677 100644
--- a/serialisation_conformance_test/pom.xml
+++ b/serialisation_conformance_test/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>org.ehrbase.openehr.sdk</groupId>
         <artifactId>sdk-parent</artifactId>
-        <version>2.9.0-SNAPSHOT</version>
+        <version>2.9.0</version>
     </parent>
 
     <artifactId>serialisation_conformance_test</artifactId>
diff --git a/terminology/pom.xml b/terminology/pom.xml
index bc16493f0..2fced7ba8 100644
--- a/terminology/pom.xml
+++ b/terminology/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>org.ehrbase.openehr.sdk</groupId>
         <artifactId>sdk-parent</artifactId>
-        <version>2.9.0-SNAPSHOT</version>
+        <version>2.9.0</version>
     </parent>
 
     <artifactId>terminology</artifactId>
diff --git a/test-coverage/pom.xml b/test-coverage/pom.xml
index 51bb8227d..161470b1b 100644
--- a/test-coverage/pom.xml
+++ b/test-coverage/pom.xml
@@ -8,7 +8,7 @@
     <parent>
         <groupId>org.ehrbase.openehr.sdk</groupId>
         <artifactId>sdk-parent</artifactId>
-        <version>2.9.0-SNAPSHOT</version>
+        <version>2.9.0</version>
     </parent>
 
     <artifactId>test-coverage</artifactId>
diff --git a/test-data/pom.xml b/test-data/pom.xml
index 779adceca..b1a3907f5 100644
--- a/test-data/pom.xml
+++ b/test-data/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>org.ehrbase.openehr.sdk</groupId>
         <artifactId>sdk-parent</artifactId>
-        <version>2.9.0-SNAPSHOT</version>
+        <version>2.9.0</version>
     </parent>
 
     <artifactId>test-data</artifactId>
diff --git a/util/pom.xml b/util/pom.xml
index 19aba13ec..eb777d497 100644
--- a/util/pom.xml
+++ b/util/pom.xml
@@ -25,7 +25,7 @@
     <parent>
         <groupId>org.ehrbase.openehr.sdk</groupId>
         <artifactId>sdk-parent</artifactId>
-        <version>2.9.0-SNAPSHOT</version>
+        <version>2.9.0</version>
     </parent>
 
     <artifactId>util</artifactId>
diff --git a/validation/pom.xml b/validation/pom.xml
index 8eb605ff7..2bb05660a 100644
--- a/validation/pom.xml
+++ b/validation/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.ehrbase.openehr.sdk</groupId>
         <artifactId>sdk-parent</artifactId>
-        <version>2.9.0-SNAPSHOT</version>
+        <version>2.9.0</version>
     </parent>
 
     <artifactId>validation</artifactId>
diff --git a/web-template/pom.xml b/web-template/pom.xml
index 554661e75..efa2d4247 100644
--- a/web-template/pom.xml
+++ b/web-template/pom.xml
@@ -25,7 +25,7 @@
     <parent>
         <groupId>org.ehrbase.openehr.sdk</groupId>
         <artifactId>sdk-parent</artifactId>
-        <version>2.9.0-SNAPSHOT</version>
+        <version>2.9.0</version>
     </parent>
 
     <artifactId>web-template</artifactId>