diff --git a/core-services/batch/pom.xml b/core-services/batch/pom.xml
index f2ed7a70d..cac9c9a9b 100644
--- a/core-services/batch/pom.xml
+++ b/core-services/batch/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.sap.ai.sdk</groupId>
     <artifactId>sdk-parent</artifactId>
-    <version>1.22.0-SNAPSHOT</version>
+    <version>1.23.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <artifactId>batch</artifactId>
diff --git a/core-services/document-grounding/pom.xml b/core-services/document-grounding/pom.xml
index 2281ddb2f..0fd55b018 100644
--- a/core-services/document-grounding/pom.xml
+++ b/core-services/document-grounding/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.sap.ai.sdk</groupId>
     <artifactId>sdk-parent</artifactId>
-    <version>1.22.0-SNAPSHOT</version>
+    <version>1.23.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <artifactId>document-grounding</artifactId>
diff --git a/core-services/prompt-registry/pom.xml b/core-services/prompt-registry/pom.xml
index 3d2beaa82..f9d462ede 100644
--- a/core-services/prompt-registry/pom.xml
+++ b/core-services/prompt-registry/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.sap.ai.sdk</groupId>
     <artifactId>sdk-parent</artifactId>
-    <version>1.22.0-SNAPSHOT</version>
+    <version>1.23.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <artifactId>prompt-registry</artifactId>
diff --git a/core/pom.xml b/core/pom.xml
index b74d08cef..16061ae0c 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.sap.ai.sdk</groupId>
     <artifactId>sdk-parent</artifactId>
-    <version>1.22.0-SNAPSHOT</version>
+    <version>1.23.0-SNAPSHOT</version>
   </parent>
   <artifactId>core</artifactId>
   <name>AI Core client</name>
diff --git a/docs/release_notes.md b/docs/release_notes.md
index 5e442ea8e..5745d6681 100644
--- a/docs/release_notes.md
+++ b/docs/release_notes.md
@@ -12,14 +12,7 @@
 
 ### ✨ New Functionality
 
-- [OpenAI] Support for OpenAI Responses API with the new `AiCoreOpenAiClient`.
-  The following endpoints are currently supported:
-  - create()
-  - createStreaming()
-  - retrieve()
-  - delete()
-  - cancel()
-- [Orchestration] You can now add multiple custom headers to an `OrchestrationClient` at once via `.withHeaders()`.
+-
 
 ### 📈 Improvements
 
diff --git a/foundation-models/openai/pom.xml b/foundation-models/openai/pom.xml
index fa2d7807d..cef4059eb 100644
--- a/foundation-models/openai/pom.xml
+++ b/foundation-models/openai/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.sap.ai.sdk</groupId>
     <artifactId>sdk-parent</artifactId>
-    <version>1.22.0-SNAPSHOT</version>
+    <version>1.23.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <groupId>com.sap.ai.sdk.foundationmodels</groupId>
diff --git a/foundation-models/sap-rpt/pom.xml b/foundation-models/sap-rpt/pom.xml
index 3587d8e9a..7403a9a79 100644
--- a/foundation-models/sap-rpt/pom.xml
+++ b/foundation-models/sap-rpt/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.sap.ai.sdk</groupId>
     <artifactId>sdk-parent</artifactId>
-    <version>1.22.0-SNAPSHOT</version>
+    <version>1.23.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <groupId>com.sap.ai.sdk.foundationmodels</groupId>
diff --git a/orchestration/pom.xml b/orchestration/pom.xml
index df04c2286..8b8d7f0f1 100644
--- a/orchestration/pom.xml
+++ b/orchestration/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.sap.ai.sdk</groupId>
     <artifactId>sdk-parent</artifactId>
-    <version>1.22.0-SNAPSHOT</version>
+    <version>1.23.0-SNAPSHOT</version>
   </parent>
   <artifactId>orchestration</artifactId>
   <name>Orchestration client</name>
diff --git a/pom.xml b/pom.xml
index 372d5d6dd..2f8cdd4cc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.sap.ai.sdk</groupId>
   <artifactId>sdk-parent</artifactId>
-  <version>1.22.0-SNAPSHOT</version>
+  <version>1.23.0-SNAPSHOT</version>
   <packaging>pom</packaging>
   <name>Parent pom</name>
   <description>SAP Cloud SDK for AI is the official Software Development Kit (SDK) for SAP AI Core, SAP Generative AI Hub, and Orchestration Service. The parent pom defines dependency versions and plugin configurations</description>
diff --git a/sample-code/spring-app/pom.xml b/sample-code/spring-app/pom.xml
index 623536704..e3c4ccb0e 100644
--- a/sample-code/spring-app/pom.xml
+++ b/sample-code/spring-app/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.sap.ai.sdk</groupId>
     <artifactId>sdk-parent</artifactId>
-    <version>1.22.0-SNAPSHOT</version>
+    <version>1.23.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <groupId>com.sap.ai.sdk.app</groupId>