diff --git a/pom.xml b/pom.xml
index 00ac66c..d42d0b3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>ch.fritteli</groupId>
         <artifactId>fritteli-build-parent</artifactId>
-        <version>5.0.0</version>
+        <version>5.1.0</version>
     </parent>
 
     <groupId>ch.fritteli.a-maze-r</groupId>
@@ -55,22 +55,16 @@
     </distributionManagement>
 
     <properties>
-        <assertj.version>3.25.3</assertj.version>
         <jackson.version>2.17.1</jackson.version>
         <jsonschema2pojo-maven-plugin.version>1.2.1</jsonschema2pojo-maven-plugin.version>
-        <logback.version>1.5.6</logback.version>
-        <lombok.version>1.18.32</lombok.version>
-        <maven.compiler.release>21</maven.compiler.release>
         <maven-site-plugin.version>4.0.0-M8</maven-site-plugin.version>
         <pdfbox.version>3.0.2</pdfbox.version>
-        <slf4j.version>2.0.12</slf4j.version>
     </properties>
 
     <dependencies>
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
-            <version>${lombok.version}</version>
         </dependency>
         <dependency>
             <groupId>org.jetbrains</groupId>
@@ -98,12 +92,10 @@
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>
-            <version>${slf4j.version}</version>
         </dependency>
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>${logback.version}</version>
         </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
@@ -112,7 +104,6 @@
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
             <scope>test</scope>
         </dependency>
     </dependencies>