diff --git a/app/services/proforma_service/convert_exercise_to_task.rb b/app/services/proforma_service/convert_exercise_to_task.rb
index 5c87f50e..c2ff1bbf 100644
--- a/app/services/proforma_service/convert_exercise_to_task.rb
+++ b/app/services/proforma_service/convert_exercise_to_task.rb
@@ -31,7 +31,7 @@ module ProformaService
           language: DEFAULT_LANGUAGE,
           model_solutions: model_solutions,
           meta_data: {
-            openHPI: {
+            CodeOcean: {
               instructions: @exercise.instructions,
             },
           },
@@ -76,10 +76,12 @@ module ProformaService
     end
 
     def test_meta_data(file)
-      {openHPI: {
-        'entry-point': file.filepath,
-        'feedback-message': file.feedback_message,
-      }}
+      {
+        CodeOcean: {
+          'entry-point': file.filepath,
+          'feedback-message': file.feedback_message,
+        },
+      }
     end
 
     def test_file(file)
diff --git a/app/services/proforma_service/convert_task_to_exercise.rb b/app/services/proforma_service/convert_task_to_exercise.rb
index e761efb5..206bda18 100644
--- a/app/services/proforma_service/convert_task_to_exercise.rb
+++ b/app/services/proforma_service/convert_task_to_exercise.rb
@@ -21,7 +21,7 @@ module ProformaService
         user: @user,
         title: @task.title,
         description: @task.description,
-        instructions: @task.meta_data&.dig(:openHPI)&.dig(:instructions),
+        instructions: @task.meta_data&.dig(:CodeOcean)&.dig(:instructions),
         files: files
       )
     end
@@ -34,7 +34,7 @@ module ProformaService
       @task.tests.map do |test_object|
         task_files.delete(test_object.files.first.id).tap do |file|
           file.weight = 1.0
-          file.feedback_message = test_object.meta_data[:openHPI]&.dig(:'feedback-message')
+          file.feedback_message = test_object.meta_data[:CodeOcean]&.dig(:'feedback-message')
         end
       end
     end
diff --git a/app/services/proforma_service/export_task.rb b/app/services/proforma_service/export_task.rb
index f1afc741..ca97f1c7 100644
--- a/app/services/proforma_service/export_task.rb
+++ b/app/services/proforma_service/export_task.rb
@@ -9,7 +9,7 @@ module ProformaService
 
     def execute
       @task = ConvertExerciseToTask.call(exercise: @exercise)
-      namespaces = [{prefix: 'openHPI', uri: 'open.hpi.de'}]
+      namespaces = [{prefix: 'CodeOcean', uri: 'codeocean.openhpi.de'}]
       exporter = Proforma::Exporter.new(task: @task, custom_namespaces: namespaces)
       exporter.perform
     end
diff --git a/spec/services/proforma_service/convert_exercise_to_task_spec.rb b/spec/services/proforma_service/convert_exercise_to_task_spec.rb
index a8f277bb..87d90b90 100644
--- a/spec/services/proforma_service/convert_exercise_to_task_spec.rb
+++ b/spec/services/proforma_service/convert_exercise_to_task_spec.rb
@@ -38,7 +38,7 @@ RSpec.describe ProformaService::ConvertExerciseToTask do
         uuid: exercise.uuid,
         language: described_class::DEFAULT_LANGUAGE,
         meta_data: {
-          openHPI: {
+          CodeOcean: {
             instructions: exercise.instructions,
           },
         },
@@ -167,7 +167,7 @@ RSpec.describe ProformaService::ConvertExerciseToTask do
           title: test_file.name,
           files: have(1).item,
           meta_data: {
-            openHPI: {
+            CodeOcean: {
               'entry-point': test_file.filepath,
               'feedback-message': 'feedback_message',
             },
diff --git a/spec/services/proforma_service/convert_task_to_exercise_spec.rb b/spec/services/proforma_service/convert_task_to_exercise_spec.rb
index b357df01..cca0b967 100644
--- a/spec/services/proforma_service/convert_task_to_exercise_spec.rb
+++ b/spec/services/proforma_service/convert_task_to_exercise_spec.rb
@@ -39,7 +39,7 @@ describe ProformaService::ConvertTaskToExercise do
         parent_uuid: 'parent_uuid',
         language: 'language',
         meta_data: {
-          openHPI: {
+          CodeOcean: {
             instructions: 'instructions',
           },
         },
@@ -233,7 +233,7 @@ describe ProformaService::ConvertTaskToExercise do
           test_type: 'test_type',
           files: test_files,
           meta_data: {
-            openHPI: {
+            CodeOcean: {
               'feedback-message': 'feedback-message',
               'testing-framework': 'testing-framework',
               'testing-framework-version': 'testing-framework-version',
@@ -278,7 +278,7 @@ describe ProformaService::ConvertTaskToExercise do
           Proforma::Test.new(
             files: test_files2,
             meta_data: {
-              openHPI: {
+              CodeOcean: {
                 'feedback-message': 'feedback-message',
                 'testing-framework': 'testing-framework',
                 'testing-framework-version': 'testing-framework-version',
@@ -324,7 +324,7 @@ describe ProformaService::ConvertTaskToExercise do
           id: exercise.id,
           title: task.title,
           description: task.description,
-          instructions: task.meta_data[:openHPI][:instructions],
+          instructions: task.meta_data[:CodeOcean][:instructions],
           execution_environment: exercise.execution_environment,
           uuid: exercise.uuid,
           user: exercise.user,
@@ -360,7 +360,7 @@ describe ProformaService::ConvertTaskToExercise do
             test_type: 'test_type',
             files: test_files,
             meta_data: {
-              openHPI: {
+              CodeOcean: {
                 'feedback-message': 'feedback-message',
                 'testing-framework': 'testing-framework',
                 'testing-framework-version': 'testing-framework-version',
diff --git a/spec/services/proforma_service/export_task_spec.rb b/spec/services/proforma_service/export_task_spec.rb
index 3c2b4f26..331a7ec7 100644
--- a/spec/services/proforma_service/export_task_spec.rb
+++ b/spec/services/proforma_service/export_task_spec.rb
@@ -30,7 +30,7 @@ describe ProformaService::ExportTask do
 
     before do
       allow(ProformaService::ConvertExerciseToTask).to receive(:call).with(exercise: exercise).and_return(task)
-      allow(Proforma::Exporter).to receive(:new).with(task: task, custom_namespaces: [{prefix: 'openHPI', uri: 'open.hpi.de'}]).and_return(exporter)
+      allow(Proforma::Exporter).to receive(:new).with(task: task, custom_namespaces: [{prefix: 'CodeOcean', uri: 'codeocean.openhpi.de'}]).and_return(exporter)
     end
 
     it do