diff --git a/cobigen-maven/cobigen-maven-systemtest/src/test/resources/testdata/systemtest/Devon4JTemplateTest/TestDifferentFileSystems/pom.xml b/cobigen-maven/cobigen-maven-systemtest/src/test/resources/testdata/systemtest/Devon4JTemplateTest/TestDifferentFileSystems/pom.xml
index ccb1516f4d..4a93a373e1 100644
--- a/cobigen-maven/cobigen-maven-systemtest/src/test/resources/testdata/systemtest/Devon4JTemplateTest/TestDifferentFileSystems/pom.xml
+++ b/cobigen-maven/cobigen-maven-systemtest/src/test/resources/testdata/systemtest/Devon4JTemplateTest/TestDifferentFileSystems/pom.xml
@@ -1,5 +1,4 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.devonfw.test</groupId>
   <artifactId>Devon4JTemplateTest-TestDifferentFileSystems</artifactId>
@@ -34,11 +33,6 @@
           </templates>
         </configuration>
         <dependencies>
-        <dependency>
-            <groupId>com.devonfw.cobigen</groupId>
-            <artifactId>templates-devon4j</artifactId>
-            <version>20.08.002</version>
-        </dependency>
           <dependency>
             <groupId>com.devonfw.cobigen</groupId>
             <artifactId>tempeng-freemarker</artifactId>
@@ -49,6 +43,11 @@
             <artifactId>openapiplugin</artifactId>
             <version>${pluginVersion}</version>
           </dependency>
+          <dependency>
+            <groupId>com.devonfw.cobigen</groupId>
+            <artifactId>templates-devon4j</artifactId>
+            <version>20.08.002</version>
+          </dependency>
           <dependency>
             <groupId>com.devonfw.cobigen</groupId>
             <artifactId>javaplugin</artifactId>
@@ -83,4 +82,4 @@
       </plugin>
     </plugins>
   </build>
-</project>
+</project>
\ No newline at end of file
diff --git a/cobigen-plugins/cobigen-openapiplugin-parent/cobigen-openapiplugin-model/src/main/java/com/devonfw/cobigen/openapiplugin/model/OpenAPIFile.java b/cobigen-plugins/cobigen-openapiplugin-parent/cobigen-openapiplugin-model/src/main/java/com/devonfw/cobigen/openapiplugin/model/OpenAPIFile.java
index 66905540a0..76685f6d7e 100644
--- a/cobigen-plugins/cobigen-openapiplugin-parent/cobigen-openapiplugin-model/src/main/java/com/devonfw/cobigen/openapiplugin/model/OpenAPIFile.java
+++ b/cobigen-plugins/cobigen-openapiplugin-parent/cobigen-openapiplugin-model/src/main/java/com/devonfw/cobigen/openapiplugin/model/OpenAPIFile.java
@@ -3,7 +3,7 @@
 import java.net.URI;
 import java.nio.file.Path;
 
-import com.reprezen.kaizen.oasparser.model3.OpenApi3;
+import com.networknt.oas.model.OpenApi3;
 
 /** Swagger file transfer object which contains the {@link Path} and the name of the file */
 public class OpenAPIFile {
diff --git a/cobigen-plugins/cobigen-openapiplugin-parent/cobigen-openapiplugin/src/main/java/com/devonfw/cobigen/openapiplugin/inputreader/OpenAPIInputReader.java b/cobigen-plugins/cobigen-openapiplugin-parent/cobigen-openapiplugin/src/main/java/com/devonfw/cobigen/openapiplugin/inputreader/OpenAPIInputReader.java
index 9780ad82a0..74349d4938 100644
--- a/cobigen-plugins/cobigen-openapiplugin-parent/cobigen-openapiplugin/src/main/java/com/devonfw/cobigen/openapiplugin/inputreader/OpenAPIInputReader.java
+++ b/cobigen-plugins/cobigen-openapiplugin-parent/cobigen-openapiplugin/src/main/java/com/devonfw/cobigen/openapiplugin/inputreader/OpenAPIInputReader.java
@@ -30,19 +30,19 @@
 import com.devonfw.cobigen.openapiplugin.model.ResponseDef;
 import com.devonfw.cobigen.openapiplugin.model.ServerDef;
 import com.devonfw.cobigen.openapiplugin.util.constants.Constants;
-import com.reprezen.jsonoverlay.JsonOverlay;
-import com.reprezen.jsonoverlay.Overlay;
-import com.reprezen.kaizen.oasparser.OpenApiParser;
-import com.reprezen.kaizen.oasparser.model3.Info;
-import com.reprezen.kaizen.oasparser.model3.MediaType;
-import com.reprezen.kaizen.oasparser.model3.OpenApi3;
-import com.reprezen.kaizen.oasparser.model3.Operation;
-import com.reprezen.kaizen.oasparser.model3.Parameter;
-import com.reprezen.kaizen.oasparser.model3.Path;
-import com.reprezen.kaizen.oasparser.model3.RequestBody;
-import com.reprezen.kaizen.oasparser.model3.Response;
-import com.reprezen.kaizen.oasparser.model3.Schema;
-import com.reprezen.kaizen.oasparser.model3.Server;
+import com.networknt.jsonoverlay.JsonOverlay;
+import com.networknt.jsonoverlay.Overlay;
+import com.networknt.oas.OpenApiParser;
+import com.networknt.oas.model.Info;
+import com.networknt.oas.model.MediaType;
+import com.networknt.oas.model.OpenApi3;
+import com.networknt.oas.model.Operation;
+import com.networknt.oas.model.Parameter;
+import com.networknt.oas.model.Path;
+import com.networknt.oas.model.RequestBody;
+import com.networknt.oas.model.Response;
+import com.networknt.oas.model.Schema;
+import com.networknt.oas.model.Server;
 
 /**
  * Extension for the {@link InputReader} Interface of the CobiGen, to be able to read OpenApi3 definition files into
diff --git a/cobigen-plugins/cobigen-openapiplugin-parent/pom.xml b/cobigen-plugins/cobigen-openapiplugin-parent/pom.xml
index 37cf8047f1..070ab452cf 100644
--- a/cobigen-plugins/cobigen-openapiplugin-parent/pom.xml
+++ b/cobigen-plugins/cobigen-openapiplugin-parent/pom.xml
@@ -18,9 +18,9 @@
 
   <dependencies>
     <dependency>
-      <groupId>com.github.maybeec</groupId>
+      <groupId>com.networknt</groupId>
       <artifactId>openapi-parser</artifactId>
-      <version>4.0.4</version>
+      <version>2.1.5</version>
     </dependency>
   </dependencies>
 </project>