diff --git a/.github/workflows/actions.yml b/.github/workflows/actions.yml
index 42204814..d158e403 100644
--- a/.github/workflows/actions.yml
+++ b/.github/workflows/actions.yml
@@ -15,7 +15,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           java-version: ${{ matrix.java_version }}
-          distribution: 'adopt'
+          distribution: 'temurin'
       - name: Remove Rest API for Java 8 because of library incompatibility
         if: contains(matrix.java_version, '8') == true && contains(matrix.os, 'win') == true
         run: |
diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index 010ddf8b..661e217c 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -1,15 +1,15 @@
 #              OpenAS2 Server
-#              Version 4.11.0
+#              Version 4.12.0
 #              RELEASE NOTES
 -----
-The OpenAS2 project is pleased to announce the release of OpenAS2 4.11.0
+The OpenAS2 project is pleased to announce the release of OpenAS2 4.12.0
 
-The release download file is: OpenAS2Server-4.11.0.zip
+The release download file is: OpenAS2Server-4.12.0.zip
 
 The zip file contains a PDF document (OpenAS2HowTo.pdf) providing information on installing and using the application.
 ## NOTE: Testing covers Java 17 to 21.
 
-Version UNRELEASED
+Version 4.12.0 2026-09-09
 ===========================
 
 This is a minor enhancement release.
@@ -38,7 +38,7 @@ This is a minor enhancement release.
    both rotate an existing identity. The previous key pair is left in place unless the new one is written successfully, and
    the entry is stored under the keystore password so it can be read back.
 
-Version 4.11.0 - 2026-09-02
+Version 4.12.0 - 2026-09-02
 ===========================
 
 This is a minor enhancement release.
diff --git a/Server/pom.xml b/Server/pom.xml
index d93f761a..5b2abdf1 100644
--- a/Server/pom.xml
+++ b/Server/pom.xml
@@ -7,7 +7,7 @@
         <!-- DO NOT CHANGE THIS "groupId" WITHOUT CHANGING XMLSession.getManifestAttributes.MANIFEST_VENDOR_ID_ATTRIB -->
         <groupId>net.sf.openas2</groupId>
         <artifactId>OpenAS2</artifactId>
-        <version>4.11.0</version>
+        <version>4.12.0</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/changes.txt b/changes.txt
index 4c3a79c6..0db0705d 100644
--- a/changes.txt
+++ b/changes.txt
@@ -1,9 +1,9 @@
 **IMPORTANT NOTE**: Please review upgrade notes in the RELEASE-NOTES.md if you are upgrading
 
-Version UNRELEASED
+Version 4.12.0 2026-09-09
 ===========================
 
-This is a minor enhancement release.
+This is a minor enhancement and bugfix release
 1. Add a migration tool that loads a partnerships XML file into the partner and partnership database tables read by
    DbPartnershipFactory, so an existing XML configuration can be moved to the database store without being retyped:
    bin/upgrade/migrate_partnerships_to_db.sh <partnerships.xml> <jdbc_url> <db_user> <db_password>. Sender and receiver
diff --git a/pom.xml b/pom.xml
index 38447453..7881382e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>net.sf.openas2</groupId>
     <artifactId>OpenAS2</artifactId>
-    <version>4.11.0</version>
+    <version>4.12.0</version>
     <name>OpenAS2</name>
     <packaging>pom</packaging>
 
@@ -91,7 +91,7 @@
             <dependency>
                 <groupId>com.h2database</groupId>
                 <artifactId>h2</artifactId>
-                <version>2.4.240</version>
+                <version>2.5.250</version>
             </dependency>
             <!-- AMQP 1.0 JMS client for the queue-based sender module (Azure Service Bus and any AMQP broker).
                  Qpid JMS 2.x uses the jakarta.jms namespace to match the rest of the jakarta.* stack. -->
@@ -104,13 +104,13 @@
             <dependency>
                 <groupId>org.apache.activemq</groupId>
                 <artifactId>artemis-server</artifactId>
-                <version>2.56.0</version>
+                <version>2.57.0</version>
                 <scope>test</scope>
             </dependency>
             <dependency>
                 <groupId>org.apache.activemq</groupId>
                 <artifactId>artemis-amqp-protocol</artifactId>
-                <version>2.56.0</version>
+                <version>2.57.0</version>
                 <scope>test</scope>
             </dependency>
             <!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpcore -->
@@ -159,7 +159,7 @@
 			<dependency>
 			    <groupId>org.slf4j</groupId>
 			    <artifactId>slf4j-api</artifactId>
-			    <version>2.0.18</version>
+			    <version>2.0.19</version>
 			</dependency>
 			<dependency>
 			    <groupId>ch.qos.logback</groupId>