diff --git a/backend/build.gradle.kts b/backend/build.gradle.kts
index 9018d84..4560b98 100644
--- a/backend/build.gradle.kts
+++ b/backend/build.gradle.kts
@@ -1,6 +1,6 @@
 plugins {
 	java
-	id("org.springframework.boot") version "4.0.6"
+	id("org.springframework.boot") version "4.1.0"
 	id("io.spring.dependency-management") version "1.1.7"
 }
 
@@ -23,7 +23,7 @@ repositories {
 	mavenCentral()
 }
 
-extra["springAiVersion"] = "2.0.0-M3"
+extra["springAiVersion"] = "2.0.0"
 
 dependencies {
 	implementation("org.springframework.boot:spring-boot-starter-data-jpa")
diff --git a/backend/src/main/java/com/vaessl/app/connection/ConnectionRepository.java b/backend/src/main/java/com/vaessl/app/connection/ConnectionRepository.java
index 880f567..f25d437 100644
--- a/backend/src/main/java/com/vaessl/app/connection/ConnectionRepository.java
+++ b/backend/src/main/java/com/vaessl/app/connection/ConnectionRepository.java
@@ -1,9 +1,7 @@
 package com.vaessl.app.connection;
 
 import org.springframework.data.jpa.repository.JpaRepository;
-import org.springframework.stereotype.Repository;
 
-@Repository
 public interface ConnectionRepository extends JpaRepository<ConnectionEntity, Long> {
 
     ConnectionEntity findByAppUrlAndUsername(String appUrl, String username);
diff --git a/backend/src/test/resources/application-test.yaml b/backend/src/test/resources/application-test.yaml
index b415c9d..553dff6 100644
--- a/backend/src/test/resources/application-test.yaml
+++ b/backend/src/test/resources/application-test.yaml
@@ -1,9 +1,9 @@
 spring:
   datasource:
-    url : ${DB_TEST_URL}
+    url: ${DB_TEST_URL}
     username: ${DB_USERNAME}
     password: ${DB_PASSWORD}
     driver-class-name: ${PG_DRIVER_CLASS_NAME}
   jpa:
     hibernate:
-      ddl-auto: create-drop
\ No newline at end of file
+      ddl-auto: update
diff --git a/docs/02-Preparation/01-code-server-adjustments.md b/docs/02-Preparation/01-code-server-adjustments.md
index 30fe462..2c56120 100644
--- a/docs/02-Preparation/01-code-server-adjustments.md
+++ b/docs/02-Preparation/01-code-server-adjustments.md
@@ -36,8 +36,6 @@ Now deploy the docker-compose and check all the configurations:
 
 ```
 java --version
-mvn --version
 npm --version
-yarn --version
 nodejs --version
 ```
\ No newline at end of file
diff --git a/docs/02-Preparation/02-Spring-Boot-setup.md b/docs/02-Preparation/02-Spring-Boot-and-database-setup.md
similarity index 81%
rename from docs/02-Preparation/02-Spring-Boot-setup.md
rename to docs/02-Preparation/02-Spring-Boot-and-database-setup.md
index 90cb819..3b00f95 100644
--- a/docs/02-Preparation/02-Spring-Boot-setup.md
+++ b/docs/02-Preparation/02-Spring-Boot-and-database-setup.md
@@ -1,4 +1,4 @@
-**Vaessl: Spring Boot setup**
+**Vaessl: Spring Boot and database setup**
 
 This app will use the current latest version 4.0.4 of Spring Boot and the latest OpenJDK 25 LTS. 
  
@@ -138,7 +138,7 @@ spring:
 
 ```
 
-Note that I'm using my own locally hosted PostgreSQL instances for the main and test database. The Docker Compose file will look something like this:
+The Docker Compose file for code-server will look something like this:
 
 ```
 ---
@@ -163,26 +163,43 @@ services:
       - 8124:8080
       - 5173:5173
     restart: unless-stopped
+```
 
-  vaessl-db:
-    image: pgvector/pgvector:pg18
-    container_name: vaessl-db
-    environment:
-      - POSTGRES_DB=vaessl
-      - POSTGRES_USER=user
-      - POSTGRES_PASSWORD=pw
-    ports:
-      - 5433:5432
+Note that I'm using my own locally hosted PostgreSQL instances for the main and test database. Just add databases via SQL or PgAdmin and install the pgvector extension to each database manually. There is an offical ready-made pgvector docker image but if you already host a PostGreSQL database you need to add the extension yourself.
 
-  vassal-test-db:
-    image: pgvector/pgvector:pg18
-    container_name: vassal-test-db
-    environment:
-      - POSTGRES_DB=vassal_test
-      - POSTGRES_USER=user
-      - POSTGRES_PASSWORD=pw
-    ports:
-      - 5434:5432
+Check the name of your PostGreSQL container:
+```
+docker ps
+```
+
+Enter your container via bash:
+
+```
+docker exec -it 876fb382969f bash
+```
+Before working on your database backup your databases:
+```
+su - postgres -c "pg_dumpall > /tmp/backup200526.sql"
+
+#exit the container and copy the backup file to local file system 
+docker cp 876fb382969f:/tmp/backup200526.sql .
+```
+
+Install dependencies, build and install pgvector:
+apt-get update
+apt-get install -y build-essential git postgresql-server-dev-all
+```
+git clone https://github.com/pgvector/pgvector.git
+cd pgvector
+make
+make install
+docker restart 876fb382969f 
+```
+Enter PostGreSQL container and create pgvector extension for each databse:
+```
+docker exec -it <container-name> psql -h localhost -U <db-user> -d <db-name>
+
+CREATE EXTENSION vector;
 ```
 
 # Appendix: Additional config for developing in Code-Server