diff --git a/CHANGELOG.md b/CHANGELOG.md
index 226ed1ad3..c2bf15d74 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,13 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ## Unreleased
 
+## [9.5.1](https://github.com/dbmdz/metadata-service/releases/tag/9.5.1) - 2025-01-22
+
+### Fixed
+
+- SQL: check function ensuring `subjects` uniqueness broke mirroring & backups;
+  FQN (with schema) are necessary
+
 ## [9.5.0](https://github.com/dbmdz/metadata-service/releases/tag/9.5.0) - 2025-01-17
 
 ### Added
diff --git a/metasvc-client/pom.xml b/metasvc-client/pom.xml
index a31f89224..fdf101cab 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>9.5.1-SNAPSHOT</version>
+    <version>9.5.1</version>
   </parent>
 
   <name>Metadata-Service: Repository Client</name>
diff --git a/metasvc-lobid-client/pom.xml b/metasvc-lobid-client/pom.xml
index fe78cbd7c..b2a8a07cd 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>9.5.1-SNAPSHOT</version>
+    <version>9.5.1</version>
   </parent>
 
   <name>Metadata-Service: lobid.org Client</name>
diff --git a/metasvc-model/pom.xml b/metasvc-model/pom.xml
index 87a8e8b41..d4fce1314 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>9.5.1-SNAPSHOT</version>
+    <version>9.5.1</version>
   </parent>
 
   <name>Metadata-Service: Model</name>
diff --git a/metasvc-server/backend-api/pom.xml b/metasvc-server/backend-api/pom.xml
index e1ce98f37..e387f8ec4 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>9.5.1-SNAPSHOT</version>
+    <version>9.5.1</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 95ed9f65f..bf741fcac 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>9.5.1-SNAPSHOT</version>
+    <version>9.5.1</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 6cee6c366..2c61e7507 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>9.5.1-SNAPSHOT</version>
+    <version>9.5.1</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 bc796f64b..b52bcd845 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>9.5.1-SNAPSHOT</version>
+    <version>9.5.1</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 cf5fe1628..72d173d94 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>9.5.1-SNAPSHOT</version>
+    <version>9.5.1</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 475b71d6b..dc4778281 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>9.5.1-SNAPSHOT</version>
+    <version>9.5.1</version>
   </parent>
 
   <name>Metadata-Service: Repository Server (Business)</name>
diff --git a/metasvc-server/pom.xml b/metasvc-server/pom.xml
index da83cd499..31d152128 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>9.5.1-SNAPSHOT</version>
+    <version>9.5.1</version>
   </parent>
 
   <name>Metadata-Service: Repository Server</name>
diff --git a/metasvc-server/webapp/pom.xml b/metasvc-server/webapp/pom.xml
index 800a7c3d1..e6bd4e50c 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>9.5.1-SNAPSHOT</version>
+    <version>9.5.1</version>
   </parent>
 
   <name>Metadata-Service: Repository Server (Webapp)</name>
diff --git a/pom.xml b/pom.xml
index d6208c49f..8bc54a86f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -11,7 +11,7 @@
 
   <groupId>io.github.dbmdz.metadata</groupId>
   <artifactId>metasvc</artifactId>
-  <version>9.5.1-SNAPSHOT</version>
+  <version>9.5.1</version>
   <packaging>pom</packaging>
 
   <name>Metadata-Service</name>