diff --git a/openapi-codegen/src/main/java/com/axonivy/ivy/tool/openapi/codegen/mojo/OpenApiClientGeneratorMojo.java b/openapi-codegen/src/main/java/com/axonivy/ivy/tool/openapi/codegen/mojo/OpenApiClientGeneratorMojo.java
index dd16754..92e6b0e 100644
--- a/openapi-codegen/src/main/java/com/axonivy/ivy/tool/openapi/codegen/mojo/OpenApiClientGeneratorMojo.java
+++ b/openapi-codegen/src/main/java/com/axonivy/ivy/tool/openapi/codegen/mojo/OpenApiClientGeneratorMojo.java
@@ -34,7 +34,7 @@
  *
  * @since 1.0.0
  */
-@Mojo(name = OpenApiClientGeneratorMojo.GOAL, requiresProject = false)
+@Mojo(name = OpenApiClientGeneratorMojo.GOAL, requiresProject = false, threadSafe = true)
 public class OpenApiClientGeneratorMojo extends AbstractMojo {
   public static final String GOAL = "generate-openapi-client";