diff --git a/poky/bitbake/lib/layerindexlib/__init__.py b/poky/bitbake/lib/layerindexlib/__init__.py
index cb79cb3..d231cf6 100644
--- a/poky/bitbake/lib/layerindexlib/__init__.py
+++ b/poky/bitbake/lib/layerindexlib/__init__.py
@@ -1,17 +1,7 @@
 # Copyright (C) 2016-2018 Wind River Systems, Inc.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 as
-# published by the Free Software Foundation.
+# SPDX-License-Identifier: GPL-2.0-only
 #
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-# See the GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 
 import datetime
 
diff --git a/poky/bitbake/lib/layerindexlib/cooker.py b/poky/bitbake/lib/layerindexlib/cooker.py
index 848f0e2..604a961 100644
--- a/poky/bitbake/lib/layerindexlib/cooker.py
+++ b/poky/bitbake/lib/layerindexlib/cooker.py
@@ -1,17 +1,7 @@
 # Copyright (C) 2016-2018 Wind River Systems, Inc.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 as
-# published by the Free Software Foundation.
+# SPDX-License-Identifier: GPL-2.0-only
 #
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-# See the GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 
 import logging
 import json
diff --git a/poky/bitbake/lib/layerindexlib/plugin.py b/poky/bitbake/lib/layerindexlib/plugin.py
index 92a2e97..7015a1a 100644
--- a/poky/bitbake/lib/layerindexlib/plugin.py
+++ b/poky/bitbake/lib/layerindexlib/plugin.py
@@ -1,18 +1,7 @@
 # Copyright (C) 2016-2018 Wind River Systems, Inc.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 as
-# published by the Free Software Foundation.
+# SPDX-License-Identifier: GPL-2.0-only
 #
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-# See the GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
 # The file contains:
 #   LayerIndex exceptions
 #   Plugin base class
diff --git a/poky/bitbake/lib/layerindexlib/restapi.py b/poky/bitbake/lib/layerindexlib/restapi.py
index d08eb20..21fd144 100644
--- a/poky/bitbake/lib/layerindexlib/restapi.py
+++ b/poky/bitbake/lib/layerindexlib/restapi.py
@@ -1,17 +1,7 @@
 # Copyright (C) 2016-2018 Wind River Systems, Inc.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 as
-# published by the Free Software Foundation.
+# SPDX-License-Identifier: GPL-2.0-only
 #
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-# See the GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 
 import logging
 import json
diff --git a/poky/bitbake/lib/layerindexlib/tests/common.py b/poky/bitbake/lib/layerindexlib/tests/common.py
index 22a5458..077382f 100644
--- a/poky/bitbake/lib/layerindexlib/tests/common.py
+++ b/poky/bitbake/lib/layerindexlib/tests/common.py
@@ -1,17 +1,7 @@
 # Copyright (C) 2017-2018 Wind River Systems, Inc.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 as
-# published by the Free Software Foundation.
+# SPDX-License-Identifier: GPL-2.0-only
 #
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-# See the GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 
 import unittest
 import tempfile
diff --git a/poky/bitbake/lib/layerindexlib/tests/cooker.py b/poky/bitbake/lib/layerindexlib/tests/cooker.py
index fdbf091..1fa102e 100644
--- a/poky/bitbake/lib/layerindexlib/tests/cooker.py
+++ b/poky/bitbake/lib/layerindexlib/tests/cooker.py
@@ -1,17 +1,7 @@
 # Copyright (C) 2018 Wind River Systems, Inc.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 as
-# published by the Free Software Foundation.
+# SPDX-License-Identifier: GPL-2.0-only
 #
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-# See the GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 
 import unittest
 import tempfile
diff --git a/poky/bitbake/lib/layerindexlib/tests/layerindexobj.py b/poky/bitbake/lib/layerindexlib/tests/layerindexobj.py
index e2fbb95..0c5ec88 100644
--- a/poky/bitbake/lib/layerindexlib/tests/layerindexobj.py
+++ b/poky/bitbake/lib/layerindexlib/tests/layerindexobj.py
@@ -1,17 +1,7 @@
 # Copyright (C) 2017-2018 Wind River Systems, Inc.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 as
-# published by the Free Software Foundation.
+# SPDX-License-Identifier: GPL-2.0-only
 #
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-# See the GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 
 import unittest
 import tempfile
diff --git a/poky/bitbake/lib/layerindexlib/tests/restapi.py b/poky/bitbake/lib/layerindexlib/tests/restapi.py
index 5876695..6d8dc00 100644
--- a/poky/bitbake/lib/layerindexlib/tests/restapi.py
+++ b/poky/bitbake/lib/layerindexlib/tests/restapi.py
@@ -1,17 +1,7 @@
 # Copyright (C) 2017-2018 Wind River Systems, Inc.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 as
-# published by the Free Software Foundation.
+# SPDX-License-Identifier: GPL-2.0-only
 #
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-# See the GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 
 import unittest
 import tempfile