diff --git a/src/Ext/CMakeLists.txt b/src/Ext/CMakeLists.txt
index 6609da9d40..29e2d35210 100644
--- a/src/Ext/CMakeLists.txt
+++ b/src/Ext/CMakeLists.txt
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
 # this directory is the entry point for namespace modules. Any package
 # installed to a directory "freecad" which is in sys.path can be imported
 # with "from freecad import package" and is checked for a init_gui.py
diff --git a/src/Ext/freecad/CMakeLists.txt b/src/Ext/freecad/CMakeLists.txt
index 1800895051..0aa29af09a 100644
--- a/src/Ext/freecad/CMakeLists.txt
+++ b/src/Ext/freecad/CMakeLists.txt
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
 EXECUTE_PROCESS(COMMAND ${Python3_EXECUTABLE} -c
     "from sysconfig import get_path; print(get_path('purelib'))"
     OUTPUT_VARIABLE python_libs OUTPUT_STRIP_TRAILING_WHITESPACE )
diff --git a/src/Ext/freecad/UiTools.py b/src/Ext/freecad/UiTools.py
index 0f4a4639d3..59e7162db2 100644
--- a/src/Ext/freecad/UiTools.py
+++ b/src/Ext/freecad/UiTools.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
 # (c) 2021 Werner Mayer LGPL
 
 from PySide import QtUiTools
diff --git a/src/Ext/freecad/__init__.py.template b/src/Ext/freecad/__init__.py.template
index d5360b2524..8ef16a7e3f 100644
--- a/src/Ext/freecad/__init__.py.template
+++ b/src/Ext/freecad/__init__.py.template
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
 try:
     import FreeCAD as app
 except ModuleNotFoundError:
diff --git a/src/Ext/freecad/freecad_doc.py b/src/Ext/freecad/freecad_doc.py
index b6049fe412..f9511c358e 100644
--- a/src/Ext/freecad/freecad_doc.py
+++ b/src/Ext/freecad/freecad_doc.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
 # (c) 2024 Werner Mayer LGPL
 
 __title__="FreeCAD Python documentation"
diff --git a/src/Ext/freecad/module_io.py b/src/Ext/freecad/module_io.py
index e56b707fa1..d91752151d 100644
--- a/src/Ext/freecad/module_io.py
+++ b/src/Ext/freecad/module_io.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
 from FreeCAD import Base
 import importlib
 
diff --git a/src/Ext/freecad/part.py b/src/Ext/freecad/part.py
index 4ea7ec6db9..55fd833c98 100644
--- a/src/Ext/freecad/part.py
+++ b/src/Ext/freecad/part.py
@@ -1 +1,3 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
 from Part import *
\ No newline at end of file
diff --git a/src/Ext/freecad/partdesign.py b/src/Ext/freecad/partdesign.py
index 907f5f6237..b759913678 100644
--- a/src/Ext/freecad/partdesign.py
+++ b/src/Ext/freecad/partdesign.py
@@ -1 +1,3 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
 from PartDesign import *
\ No newline at end of file
diff --git a/src/Ext/freecad/project_utility.py b/src/Ext/freecad/project_utility.py
index ac987774f1..6aede063d2 100644
--- a/src/Ext/freecad/project_utility.py
+++ b/src/Ext/freecad/project_utility.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
 # (c) 2023 Werner Mayer LGPL
 
 __title__="Document handling module"
diff --git a/src/Ext/freecad/sketcher.py b/src/Ext/freecad/sketcher.py
index a742c8ecba..c0e60897ce 100644
--- a/src/Ext/freecad/sketcher.py
+++ b/src/Ext/freecad/sketcher.py
@@ -1 +1,3 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
 from Sketcher import *
\ No newline at end of file
diff --git a/src/Ext/freecad/utils.py b/src/Ext/freecad/utils.py
index 0230a2b0ad..7aae7f3b59 100644
--- a/src/Ext/freecad/utils.py
+++ b/src/Ext/freecad/utils.py
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: LGPL-2.1-or-later
+
 # ***************************************************************************
 # *                                                                         *
 # *   Copyright (c) 2022-2023 FreeCAD Project Association                   *
diff --git a/src/Ext/freecad/utils_zip.py b/src/Ext/freecad/utils_zip.py
index d3ae1d007f..c1d0b5b817 100644
--- a/src/Ext/freecad/utils_zip.py
+++ b/src/Ext/freecad/utils_zip.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
 # (c) 2024 Werner Mayer LGPL
 
 __author__ = "Werner Mayer"