diff --git a/cwl/cwl_app/__init__.py b/cwl/cwl_app/__init__.py
index 52da8bf..9f61e51 100644
--- a/cwl/cwl_app/__init__.py
+++ b/cwl/cwl_app/__init__.py
@@ -1,3 +1,3 @@
 """This package provides a CWLApp class to run CWL Command Line Tools."""
 
-from cwl.CWLApp.cwl_app import CWLApp
+from cwl.cwl_app import CWLApp
\ No newline at end of file
diff --git a/tests/__init__.py b/tests/__init__.py
index e331ff8..c538a41 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -1,3 +1,3 @@
 """This package contains the tests for the CWLApp class."""
 
-from cwl.CWLApp import CWLApp
+from cwl.cwl_app import CWLApp
diff --git a/tests/test_invalid_cwl_files.py b/tests/test_invalid_cwl_files.py
index 2ceddd3..5a7117d 100644
--- a/tests/test_invalid_cwl_files.py
+++ b/tests/test_invalid_cwl_files.py
@@ -4,7 +4,7 @@
 
 import pytest
 
-from cwl.CWLApp import CWLApp
+from cwl.cwl_app import CWLApp
 
 invalid_cwl_files = os.path.join(os.getcwd(), "tests", "invalid-cwl-files")
 
diff --git a/tools/tools.py b/tools/tools.py
index d571150..7334992 100644
--- a/tools/tools.py
+++ b/tools/tools.py
@@ -2,7 +2,7 @@
 
 import os
 
-from cwl.CWLApp import CWLApp
+from cwl.cwl_app import CWLApp
 
 # Create CommandLineTool objects CWL files