diff --git a/CHANGELOG.md b/CHANGELOG.md
index bd4faacd7..370e93669 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,7 +6,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ## Unreleased
 
-## [9.1.0](https://github.com/dbmdz/metadata-service/releases/tag/9.1.0) - 2024-04-11
+## [9.1.0](https://github.com/dbmdz/metadata-service/releases/tag/9.1.0) - 2024-04-16
 
 ### Added
 
diff --git a/metasvc-client/pom.xml b/metasvc-client/pom.xml
index db2d5022d..2a34712e8 100644
--- a/metasvc-client/pom.xml
+++ b/metasvc-client/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>io.github.dbmdz.metadata</groupId>
     <artifactId>metasvc</artifactId>
-    <version>9.1.0-RC1</version>
+    <version>9.1.0</version>
   </parent>
 
   <name>Metadata-Service: Repository Client</name>
diff --git a/metasvc-lobid-client/pom.xml b/metasvc-lobid-client/pom.xml
index 8bb05469c..1e537938c 100644
--- a/metasvc-lobid-client/pom.xml
+++ b/metasvc-lobid-client/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>io.github.dbmdz.metadata</groupId>
     <artifactId>metasvc</artifactId>
-    <version>9.1.0-RC1</version>
+    <version>9.1.0</version>
   </parent>
 
   <name>Metadata-Service: lobid.org Client</name>
diff --git a/metasvc-model/pom.xml b/metasvc-model/pom.xml
index 10d4dbf7c..18fe6a13c 100644
--- a/metasvc-model/pom.xml
+++ b/metasvc-model/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>io.github.dbmdz.metadata</groupId>
     <artifactId>metasvc</artifactId>
-    <version>9.1.0-RC1</version>
+    <version>9.1.0</version>
   </parent>
 
   <name>Metadata-Service: Model</name>
diff --git a/metasvc-server/backend-api/pom.xml b/metasvc-server/backend-api/pom.xml
index 4b91abd5e..7f806fbfe 100644
--- a/metasvc-server/backend-api/pom.xml
+++ b/metasvc-server/backend-api/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>io.github.dbmdz.metadata</groupId>
     <artifactId>metasvc-server</artifactId>
-    <version>9.1.0-RC1</version>
+    <version>9.1.0</version>
   </parent>
 
   <name>Metadata-Service: Repository Server (Backend API)</name>
diff --git a/metasvc-server/backend-file/pom.xml b/metasvc-server/backend-file/pom.xml
index 9c9263a28..f28b23581 100644
--- a/metasvc-server/backend-file/pom.xml
+++ b/metasvc-server/backend-file/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>io.github.dbmdz.metadata</groupId>
     <artifactId>metasvc-server</artifactId>
-    <version>9.1.0-RC1</version>
+    <version>9.1.0</version>
   </parent>
 
   <name>Metadata-Service: Repository Server (Backend IMPL File)</name>
diff --git a/metasvc-server/backend-inmemory/pom.xml b/metasvc-server/backend-inmemory/pom.xml
index 790c63fac..f51c02cbb 100644
--- a/metasvc-server/backend-inmemory/pom.xml
+++ b/metasvc-server/backend-inmemory/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>io.github.dbmdz.metadata</groupId>
     <artifactId>metasvc-server</artifactId>
-    <version>9.1.0-RC1</version>
+    <version>9.1.0</version>
   </parent>
 
   <name>Metadata-Service: Repository Server (Backend IMPL InMemory)</name>
diff --git a/metasvc-server/backend-jdbi/pom.xml b/metasvc-server/backend-jdbi/pom.xml
index 1e8a6d4d3..cadfd89e5 100644
--- a/metasvc-server/backend-jdbi/pom.xml
+++ b/metasvc-server/backend-jdbi/pom.xml
@@ -8,7 +8,7 @@
   <parent>
     <groupId>io.github.dbmdz.metadata</groupId>
     <artifactId>metasvc-server</artifactId>
-    <version>9.1.0-RC1</version>
+    <version>9.1.0</version>
   </parent>
 
   <name>Metadata-Service: Repository Server (Backend IMPL JDBI PostgreSql)</name>
diff --git a/metasvc-server/backend-lobid/pom.xml b/metasvc-server/backend-lobid/pom.xml
index 6f3b5c29e..a47d29e3d 100644
--- a/metasvc-server/backend-lobid/pom.xml
+++ b/metasvc-server/backend-lobid/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>io.github.dbmdz.metadata</groupId>
     <artifactId>metasvc-server</artifactId>
-    <version>9.1.0-RC1</version>
+    <version>9.1.0</version>
   </parent>
 
   <name>Metadata-Service: Repository Server (Backend IMPL External System lobid.org)</name>
diff --git a/metasvc-server/business/pom.xml b/metasvc-server/business/pom.xml
index d4bab9b03..5204071fc 100644
--- a/metasvc-server/business/pom.xml
+++ b/metasvc-server/business/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>io.github.dbmdz.metadata</groupId>
     <artifactId>metasvc-server</artifactId>
-    <version>9.1.0-RC1</version>
+    <version>9.1.0</version>
   </parent>
 
   <name>Metadata-Service: Repository Server (Business)</name>
diff --git a/metasvc-server/pom.xml b/metasvc-server/pom.xml
index 7d8165a43..9feb3256f 100644
--- a/metasvc-server/pom.xml
+++ b/metasvc-server/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>io.github.dbmdz.metadata</groupId>
     <artifactId>metasvc</artifactId>
-    <version>9.1.0-RC1</version>
+    <version>9.1.0</version>
   </parent>
 
   <name>Metadata-Service: Repository Server</name>
diff --git a/metasvc-server/webapp/pom.xml b/metasvc-server/webapp/pom.xml
index b893d4414..6db091178 100644
--- a/metasvc-server/webapp/pom.xml
+++ b/metasvc-server/webapp/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>io.github.dbmdz.metadata</groupId>
     <artifactId>metasvc-server</artifactId>
-    <version>9.1.0-RC1</version>
+    <version>9.1.0</version>
   </parent>
 
   <name>Metadata-Service: Repository Server (Webapp)</name>
diff --git a/pom.xml b/pom.xml
index 626d9b555..f173fec51 100644
--- a/pom.xml
+++ b/pom.xml
@@ -11,7 +11,7 @@
 
   <groupId>io.github.dbmdz.metadata</groupId>
   <artifactId>metasvc</artifactId>
-  <version>9.1.0-RC1</version>
+  <version>9.1.0</version>
   <packaging>pom</packaging>
 
   <name>Metadata-Service</name>