diff --git a/app-rest-service/pom.xml b/app-rest-service/pom.xml
index 517c6ea..ce094e0 100644
--- a/app-rest-service/pom.xml
+++ b/app-rest-service/pom.xml
@@ -62,12 +62,15 @@
             <groupId>com.calpano.graphinout</groupId>
             <artifactId>engine</artifactId>
             <version>1.0-SNAPSHOT</version>
-
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-actuator</artifactId>
         </dependency>
+        <!-- test -->
+        <dependency><groupId>org.mockito</groupId><artifactId>mockito-core</artifactId><scope>test</scope></dependency>
+        <dependency><groupId>org.mockito</groupId><artifactId>mockito-junit-jupiter</artifactId><scope>test</scope></dependency>
+        <dependency><groupId>org.junit.jupiter</groupId><artifactId>junit-jupiter</artifactId><scope>test</scope></dependency>
 
     </dependencies>
 
diff --git a/app-rest-service/src/test/java/com/calpano/graphinout/apprestservice/service/GraphmlReaderServiceTest.java b/app-rest-service/src/test/java/com/calpano/graphinout/apprestservice/service/GraphmlReaderServiceTest.java
index a985749..3982676 100644
--- a/app-rest-service/src/test/java/com/calpano/graphinout/apprestservice/service/GraphmlReaderServiceTest.java
+++ b/app-rest-service/src/test/java/com/calpano/graphinout/apprestservice/service/GraphmlReaderServiceTest.java
@@ -12,7 +12,6 @@
 import java.io.File;
 import java.io.IOException;
 import lombok.extern.slf4j.Slf4j;
-import org.jetbrains.annotations.NotNull;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.BeforeEach;
@@ -23,6 +22,8 @@
 import org.springframework.boot.test.context.TestConfiguration;
 import org.springframework.context.annotation.Bean;
 
+import javax.annotation.Nonnull;
+
 @Slf4j
 
 @SpringBootTest
@@ -59,7 +60,7 @@ public SaveOutputSink saveOutputSink() {
   private static class MockLoadInputSource implements LoadInputSource {
 
     @Override
-    public IOResource<InputSource> load(@NotNull String sessionID, Type type) throws IOException {
+    public IOResource<InputSource> load(@Nonnull String sessionID, Type type) throws IOException {
       FilesMultiInputSource dataAndMapping =
           new FilesMultiInputSource() //
               // TODO use constants for 'data' and 'mapping'
@@ -75,7 +76,7 @@ private static class MockSaveOutputSink implements SaveOutputSink {
 
     @Override
     public String save(
-        @NotNull IOResource<OutputSink> outputSink, @NotNull String sessionId, Type type)
+        @Nonnull IOResource<OutputSink> outputSink, @Nonnull String sessionId, Type type)
         throws IOException {
       if (outputSink.getResource() instanceof InMemoryOutputSink data) {
         log.info(data.toString());
diff --git a/base/pom.xml b/base/pom.xml
index 10e0cd5..a571def 100644
--- a/base/pom.xml
+++ b/base/pom.xml
@@ -13,27 +13,19 @@
     <artifactId>base</artifactId>
 
     <dependencies>
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
+        <dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId>
             <scope>provided</scope>
         </dependency>
-        <dependency>
-            <groupId>ch.qos.logback</groupId>
-            <artifactId>logback-classic</artifactId>
+        <dependency><groupId>ch.qos.logback</groupId><artifactId>logback-classic</artifactId>
         </dependency>
-        <dependency>
-            <groupId>commons-io</groupId>
-            <artifactId>commons-io</artifactId>
-            <version>2.11.0</version>
+        <dependency><groupId>commons-io</groupId><artifactId>commons-io</artifactId>
         </dependency>
+        <dependency><groupId>com.github.spotbugs</groupId><artifactId>spotbugs-annotations</artifactId></dependency>
         <!-- test -->
-        <dependency>
-            <groupId>org.jetbrains</groupId>
-            <artifactId>annotations</artifactId>
-            <version>RELEASE</version>
-            <scope>compile</scope>
-        </dependency>
+        <dependency><groupId>io.github.classgraph</groupId><artifactId>classgraph</artifactId><scope>test</scope></dependency>
+        <dependency><groupId>org.junit.jupiter</groupId><artifactId>junit-jupiter</artifactId><scope>test</scope></dependency>
+        <dependency><groupId>org.mockito</groupId><artifactId>mockito-core</artifactId><scope>test</scope></dependency>
+        <dependency><groupId>org.mockito</groupId><artifactId>mockito-junit-jupiter</artifactId><scope>test</scope></dependency>
     </dependencies>
 
     <build>
diff --git a/base/src/main/java/com/calpano/graphinout/base/output/ValidatingGraphMlWriter.java b/base/src/main/java/com/calpano/graphinout/base/output/ValidatingGraphMlWriter.java
index 42b6917..1dab738 100644
--- a/base/src/main/java/com/calpano/graphinout/base/output/ValidatingGraphMlWriter.java
+++ b/base/src/main/java/com/calpano/graphinout/base/output/ValidatingGraphMlWriter.java
@@ -1,9 +1,9 @@
 package com.calpano.graphinout.base.output;
 
 import com.calpano.graphinout.base.graphml.*;
-import org.jetbrains.annotations.NotNull;
 import org.slf4j.Logger;
 
+import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import java.io.IOException;
 import java.util.*;
@@ -168,7 +168,7 @@ private void investigatingTheExistenceOfTheNode(GraphmlEdge edge) throws Illegal
         }
     }
 
-    private void investigatingTheExistenceOfThePort(@NotNull GraphmlEdge edge) throws IllegalStateException {
+    private void investigatingTheExistenceOfThePort(@Nonnull GraphmlEdge edge) throws IllegalStateException {
         for (String portName : Arrays.asList(edge.getSourcePortId(), edge.getTargetPortId())) {
             if (portName != null) if (!existingPortNames.contains(portName)) {
                 nonExistingPortNames.computeIfAbsent(portName, key -> new ArrayList<>()) //
@@ -177,7 +177,7 @@ private void investigatingTheExistenceOfThePort(@NotNull GraphmlEdge edge) throw
         }
     }
 
-    private void investigatingTheExistenceOfThePort(@NotNull GraphmlHyperEdge hyperEdge) throws IllegalStateException {
+    private void investigatingTheExistenceOfThePort(@Nonnull GraphmlHyperEdge hyperEdge) throws IllegalStateException {
         for (GraphmlEndpoint endpoint : hyperEdge.getEndpoints()) {
             if (endpoint.getPort() != null) if (!existingPortNames.contains(endpoint.getPort())) {
                 nonExistingPortNames.computeIfAbsent(endpoint.getPort(), key -> new ArrayList<>()) //
diff --git a/engine/pom.xml b/engine/pom.xml
index e9a6cb9..5f39150 100644
--- a/engine/pom.xml
+++ b/engine/pom.xml
@@ -17,7 +17,6 @@
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
-            <version>1.18.24</version>
         </dependency>
         <dependency>
             <groupId>com.calpano.graphinout</groupId>
@@ -45,6 +44,9 @@
             <version>1.0-SNAPSHOT</version>
         </dependency>
         <!-- test -->
+        <dependency><groupId>org.junit.jupiter</groupId><artifactId>junit-jupiter</artifactId><scope>test</scope></dependency>
+        <dependency><groupId>org.mockito</groupId><artifactId>mockito-core</artifactId><scope>test</scope></dependency>
+        <dependency><groupId>org.mockito</groupId><artifactId>mockito-junit-jupiter</artifactId><scope>test</scope></dependency>
         <dependency>
             <groupId>com.calpano.graphinout</groupId>
             <artifactId>base</artifactId>
diff --git a/pom.xml b/pom.xml
index 5ec0fe2..44f5422 100644
--- a/pom.xml
+++ b/pom.xml
@@ -30,8 +30,7 @@
         <slf4j-version>1.7.36</slf4j-version>
         <logback-classic-version>1.2.11</logback-classic-version>
         <junit-jupiter.version>5.9.0</junit-jupiter.version>
-        <mockito-all-version>1.10.19</mockito-all-version>
-        <mockito-core-version>5.1.1</mockito-core-version>
+        <mockito-core-version>5.6.0</mockito-core-version>
         <mockito-junit-jupiter-version>5.1.1</mockito-junit-jupiter-version>
         <lombok-version>1.18.24</lombok-version>
         <maven-surefire-plugin.version>3.0.0-M7</maven-surefire-plugin.version>
@@ -41,68 +40,20 @@
 
     <dependencyManagement>
         <dependencies>
-            <dependency>
-                <groupId>com.calpano.graphinout</groupId>
-                <artifactId>base</artifactId>
-                <version>1.0-SNAPSHOT</version>
-            </dependency>
-
-            <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-classic-version}</version>
-            </dependency>
-            <dependency>
-                <groupId>com.fasterxml.jackson.core</groupId>
-                <artifactId>jackson-databind</artifactId>
-                <version>${fasterxml-jackson.version}</version>
-            </dependency>
-            <dependency>
-                <groupId>com.fasterxml.jackson.datatype</groupId>
-                <artifactId>jackson-datatype-jsr310</artifactId>
-                <version>${fasterxml-jackson.version}</version>
-            </dependency>
-            <dependency>
-                <groupId>commons-io</groupId>
-                <artifactId>commons-io</artifactId>
-                <version>2.11.0</version>
-            </dependency>
-            <dependency>
-                <groupId>org.projectlombok</groupId>
-                <artifactId>lombok</artifactId>
-                <version>${lombok-version}</version>
-                <scope>provided</scope>
-            </dependency>
-
-            <dependency>
-                <groupId>org.junit.jupiter</groupId>
-                <artifactId>junit-jupiter</artifactId>
-                <version>${junit-jupiter.version}</version>
-                <scope>test</scope>
-            </dependency>
-            <dependency>
-                <groupId>org.mockito</groupId>
-                <artifactId>mockito-all</artifactId>
-                <version>${mockito-all-version}</version>
-                <scope>test</scope>
-            </dependency>
-            <dependency>
-                <groupId>org.mockito</groupId>
-                <artifactId>mockito-core</artifactId>
-                <version>${mockito-core-version}</version>
-                <scope>test</scope>
-            </dependency>
-            <dependency>
-                <groupId>org.mockito</groupId>
-                <artifactId>mockito-junit-jupiter</artifactId>
-                <version>${mockito-junit-jupiter-version}</version>
-                <scope>test</scope>
-            </dependency>
+            <dependency><groupId>ch.qos.logback</groupId><artifactId>logback-classic</artifactId><version>${logback-classic-version}</version></dependency>
+            <dependency><groupId>com.calpano.graphinout</groupId><artifactId>base</artifactId><version>1.0-SNAPSHOT</version></dependency>
+            <dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-databind</artifactId><version>${fasterxml-jackson.version}</version></dependency>
+            <dependency><groupId>com.fasterxml.jackson.datatype</groupId><artifactId>jackson-datatype-jsr310</artifactId><version>${fasterxml-jackson.version}</version></dependency>
+            <dependency><groupId>com.google.code.findbugs</groupId><artifactId>jsr305</artifactId><version>3.0.2</version></dependency>
+            <dependency><groupId>commons-io</groupId><artifactId>commons-io</artifactId><version>2.11.0</version></dependency>
+            <dependency><groupId>io.github.classgraph</groupId><artifactId>classgraph</artifactId><version>4.8.157</version></dependency>
+            <dependency><groupId>io.github.classgraph</groupId><artifactId>classgraph</artifactId><version>4.8.157</version><scope>test</scope></dependency>
+            <dependency><groupId>com.github.spotbugs</groupId><artifactId>spotbugs-annotations</artifactId><version>4.7.3</version></dependency>
+            <dependency><groupId>org.junit.jupiter</groupId><artifactId>junit-jupiter</artifactId><version>${junit-jupiter.version}</version><scope>test</scope></dependency>
+            <dependency><groupId>org.mockito</groupId><artifactId>mockito-core</artifactId><version>${mockito-core-version}</version><scope>test</scope></dependency>
+            <dependency><groupId>org.mockito</groupId><artifactId>mockito-junit-jupiter</artifactId><version>${mockito-junit-jupiter-version}</version><scope>test</scope></dependency>
+            <dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>${lombok-version}</version><scope>provided</scope></dependency>
+            <dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>${slf4j-version}</version></dependency>
         </dependencies>
     </dependencyManagement>
     <build>
@@ -166,35 +117,4 @@
 
         </plugins>
     </build>
-
-
-    <dependencies>
-        <!-- https://mvnrepository.com/artifact/com.google.code.findbugs/jsr305 -->
-        <dependency>
-            <groupId>com.google.code.findbugs</groupId>
-            <artifactId>jsr305</artifactId>
-            <version>3.0.2</version>
-        </dependency>
-        <dependency>
-            <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit-jupiter</artifactId>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>io.github.classgraph</groupId>
-            <artifactId>classgraph</artifactId>
-            <version>4.8.154</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.mockito</groupId>
-            <artifactId>mockito-junit-jupiter</artifactId>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.mockito</groupId>
-            <artifactId>mockito-core</artifactId>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
 </project>
diff --git a/reader-graphml/pom.xml b/reader-graphml/pom.xml
index ced78cd..317faf2 100644
--- a/reader-graphml/pom.xml
+++ b/reader-graphml/pom.xml
@@ -24,12 +24,14 @@
         <dependency>
             <groupId>io.github.classgraph</groupId>
             <artifactId>classgraph</artifactId>
-            <version>4.8.154</version>
         </dependency>
+        <!-- test -->
+        <dependency><groupId>org.junit.jupiter</groupId><artifactId>junit-jupiter</artifactId><scope>test</scope></dependency>
+        <dependency><groupId>org.mockito</groupId><artifactId>mockito-core</artifactId><scope>test</scope></dependency>
+        <dependency><groupId>org.mockito</groupId><artifactId>mockito-junit-jupiter</artifactId><scope>test</scope></dependency>
         <dependency>
             <groupId>commons-io</groupId>
             <artifactId>commons-io</artifactId>
-            <version>2.11.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git a/reader-graphml/src/test/java/com/calpano/graphinout/reader/graphml/GraphmlSAXSchemaValidationTest.java b/reader-graphml/src/test/java/com/calpano/graphinout/reader/graphml/GraphmlSAXSchemaValidationTest.java
index 2d7e6e8..1194a87 100644
--- a/reader-graphml/src/test/java/com/calpano/graphinout/reader/graphml/GraphmlSAXSchemaValidationTest.java
+++ b/reader-graphml/src/test/java/com/calpano/graphinout/reader/graphml/GraphmlSAXSchemaValidationTest.java
@@ -4,7 +4,6 @@
 import com.calpano.graphinout.base.input.SingleInputSource;
 import com.calpano.graphinout.base.reader.ContentError;
 import org.apache.commons.io.IOUtils;
-import org.jetbrains.annotations.NotNull;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
@@ -12,6 +11,7 @@
 import org.junit.jupiter.params.provider.MethodSource;
 import org.slf4j.Logger;
 
+import javax.annotation.Nonnull;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.io.PrintWriter;
@@ -41,7 +41,7 @@ private static Stream<String> getAllGraphmlFiles() {
         return ReaderTests.getAllTestResourceFilePaths().filter(path -> path.endsWith(".graphml"));
     }
 
-    protected Map<String, Long> expectedErrors(@NotNull String resourceName) {
+    protected Map<String, Long> expectedErrors(@Nonnull String resourceName) {
         Map<String, Long> errorLongMap = new HashMap<>();
         switch (resourceName) {
 
diff --git a/reader-jgrapht/pom.xml b/reader-jgrapht/pom.xml
index 1e44128..9bd4b7e 100644
--- a/reader-jgrapht/pom.xml
+++ b/reader-jgrapht/pom.xml
@@ -17,7 +17,6 @@
         <dependency>
             <groupId>com.calpano.graphinout</groupId>
             <artifactId>base</artifactId>
-            <version>1.0-SNAPSHOT</version>
         </dependency>
 
         <dependency>
@@ -37,6 +36,11 @@
             </exclusions>
         </dependency>
 
+        <!-- test -->
+        <dependency><groupId>org.mockito</groupId><artifactId>mockito-core</artifactId><scope>test</scope></dependency>
+        <dependency><groupId>org.mockito</groupId><artifactId>mockito-junit-jupiter</artifactId><scope>test</scope></dependency>
+        <dependency><groupId>io.github.classgraph</groupId><artifactId>classgraph</artifactId><scope>test</scope></dependency>
+        <dependency><groupId>org.junit.jupiter</groupId><artifactId>junit-jupiter</artifactId><scope>test</scope></dependency>
         <dependency>
             <groupId>com.calpano.graphinout</groupId>
             <artifactId>base</artifactId>
@@ -48,10 +52,9 @@
         <dependency>
             <groupId>commons-io</groupId>
             <artifactId>commons-io</artifactId>
-            <version>2.11.0</version>
             <scope>test</scope>
         </dependency>
 
     </dependencies>
 
-</project>
\ No newline at end of file
+</project>
diff --git a/reader-json/src/main/java/com/calpano/graphinout/reader/json/mapper/Link.java b/reader-json/src/main/java/com/calpano/graphinout/reader/json/mapper/Link.java
index bdb1d10..eb9e646 100644
--- a/reader-json/src/main/java/com/calpano/graphinout/reader/json/mapper/Link.java
+++ b/reader-json/src/main/java/com/calpano/graphinout/reader/json/mapper/Link.java
@@ -6,7 +6,8 @@
 import com.fasterxml.jackson.annotation.JsonTypeInfo.As;
 import com.fasterxml.jackson.annotation.JsonTypeName;
 import lombok.Data;
-import org.jetbrains.annotations.NotNull;
+
+import javax.annotation.Nonnull;
 
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = As.PROPERTY, property = "refer")
 @JsonSubTypes({ //
@@ -21,7 +22,7 @@ public class Link {
     public String linkLabel;
 
 
-    public int compareTo(@NotNull Link o) {
+    public int compareTo(@Nonnull Link o) {
         return  this.getClass().getName().compareTo(o.getClass().getName()) ;
     }
 
diff --git a/reader-tgf/pom.xml b/reader-tgf/pom.xml
index d35cf9f..e26098c 100644
--- a/reader-tgf/pom.xml
+++ b/reader-tgf/pom.xml
@@ -27,8 +27,8 @@
         <dependency>
             <groupId>commons-io</groupId>
             <artifactId>commons-io</artifactId>
-            <version>2.11.0</version>
         </dependency>
+        <!-- test -->
         <dependency>
             <groupId>com.calpano.graphinout</groupId>
             <artifactId>base</artifactId>
@@ -37,6 +37,8 @@
             <type>test-jar</type>
             <scope>test</scope>
         </dependency>
+        <dependency><groupId>org.junit.jupiter</groupId><artifactId>junit-jupiter</artifactId><scope>test</scope></dependency>
+        <dependency><groupId>io.github.classgraph</groupId><artifactId>classgraph</artifactId><scope>test</scope></dependency>
         <dependency>
             <groupId>org.mockito</groupId>
             <artifactId>mockito-junit-jupiter</artifactId>
@@ -48,4 +50,4 @@
             <scope>test</scope>
         </dependency>
     </dependencies>
-</project>
\ No newline at end of file
+</project>