diff --git a/COPYING b/COPYING
index 87a9de5..84b4fc6 100644
--- a/COPYING
+++ b/COPYING
@@ -7,7 +7,7 @@ or any later version according with:
 
     LICENSES/LGPL-2.1-or-later.txt
 
-gpio-tools and test suites are provided under:
+gpio-tools, test suites and examples are provided under:
 
     SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -16,15 +16,6 @@ later version according with:
 
     LICENSES/GPL-2.0-or-later.txt
 
-C++ bindings to libgpiod are provided under:
-
-    SPDX-License-Identifier: LGPL-3.0-or-later
-
-Being under the terms of the GNU Lesser General Public License version 3.0
-or any later version according with:
-
-    LICENSES/LGPL-3.0-or-later.txt
-
 The Linux Kernel uAPI headers are provided under:
 
     SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note
diff --git a/LICENSES/LGPL-3.0-or-later.txt b/LICENSES/LGPL-3.0-or-later.txt
deleted file mode 100644
index 0a04128..0000000
--- a/LICENSES/LGPL-3.0-or-later.txt
+++ /dev/null
@@ -1,165 +0,0 @@
-                   GNU LESSER GENERAL PUBLIC LICENSE
-                       Version 3, 29 June 2007
-
- Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-
-  This version of the GNU Lesser General Public License incorporates
-the terms and conditions of version 3 of the GNU General Public
-License, supplemented by the additional permissions listed below.
-
-  0. Additional Definitions.
-
-  As used herein, "this License" refers to version 3 of the GNU Lesser
-General Public License, and the "GNU GPL" refers to version 3 of the GNU
-General Public License.
-
-  "The Library" refers to a covered work governed by this License,
-other than an Application or a Combined Work as defined below.
-
-  An "Application" is any work that makes use of an interface provided
-by the Library, but which is not otherwise based on the Library.
-Defining a subclass of a class defined by the Library is deemed a mode
-of using an interface provided by the Library.
-
-  A "Combined Work" is a work produced by combining or linking an
-Application with the Library.  The particular version of the Library
-with which the Combined Work was made is also called the "Linked
-Version".
-
-  The "Minimal Corresponding Source" for a Combined Work means the
-Corresponding Source for the Combined Work, excluding any source code
-for portions of the Combined Work that, considered in isolation, are
-based on the Application, and not on the Linked Version.
-
-  The "Corresponding Application Code" for a Combined Work means the
-object code and/or source code for the Application, including any data
-and utility programs needed for reproducing the Combined Work from the
-Application, but excluding the System Libraries of the Combined Work.
-
-  1. Exception to Section 3 of the GNU GPL.
-
-  You may convey a covered work under sections 3 and 4 of this License
-without being bound by section 3 of the GNU GPL.
-
-  2. Conveying Modified Versions.
-
-  If you modify a copy of the Library, and, in your modifications, a
-facility refers to a function or data to be supplied by an Application
-that uses the facility (other than as an argument passed when the
-facility is invoked), then you may convey a copy of the modified
-version:
-
-   a) under this License, provided that you make a good faith effort to
-   ensure that, in the event an Application does not supply the
-   function or data, the facility still operates, and performs
-   whatever part of its purpose remains meaningful, or
-
-   b) under the GNU GPL, with none of the additional permissions of
-   this License applicable to that copy.
-
-  3. Object Code Incorporating Material from Library Header Files.
-
-  The object code form of an Application may incorporate material from
-a header file that is part of the Library.  You may convey such object
-code under terms of your choice, provided that, if the incorporated
-material is not limited to numerical parameters, data structure
-layouts and accessors, or small macros, inline functions and templates
-(ten or fewer lines in length), you do both of the following:
-
-   a) Give prominent notice with each copy of the object code that the
-   Library is used in it and that the Library and its use are
-   covered by this License.
-
-   b) Accompany the object code with a copy of the GNU GPL and this license
-   document.
-
-  4. Combined Works.
-
-  You may convey a Combined Work under terms of your choice that,
-taken together, effectively do not restrict modification of the
-portions of the Library contained in the Combined Work and reverse
-engineering for debugging such modifications, if you also do each of
-the following:
-
-   a) Give prominent notice with each copy of the Combined Work that
-   the Library is used in it and that the Library and its use are
-   covered by this License.
-
-   b) Accompany the Combined Work with a copy of the GNU GPL and this license
-   document.
-
-   c) For a Combined Work that displays copyright notices during
-   execution, include the copyright notice for the Library among
-   these notices, as well as a reference directing the user to the
-   copies of the GNU GPL and this license document.
-
-   d) Do one of the following:
-
-       0) Convey the Minimal Corresponding Source under the terms of this
-       License, and the Corresponding Application Code in a form
-       suitable for, and under terms that permit, the user to
-       recombine or relink the Application with a modified version of
-       the Linked Version to produce a modified Combined Work, in the
-       manner specified by section 6 of the GNU GPL for conveying
-       Corresponding Source.
-
-       1) Use a suitable shared library mechanism for linking with the
-       Library.  A suitable mechanism is one that (a) uses at run time
-       a copy of the Library already present on the user's computer
-       system, and (b) will operate properly with a modified version
-       of the Library that is interface-compatible with the Linked
-       Version.
-
-   e) Provide Installation Information, but only if you would otherwise
-   be required to provide such information under section 6 of the
-   GNU GPL, and only to the extent that such information is
-   necessary to install and execute a modified version of the
-   Combined Work produced by recombining or relinking the
-   Application with a modified version of the Linked Version. (If
-   you use option 4d0, the Installation Information must accompany
-   the Minimal Corresponding Source and Corresponding Application
-   Code. If you use option 4d1, you must provide the Installation
-   Information in the manner specified by section 6 of the GNU GPL
-   for conveying Corresponding Source.)
-
-  5. Combined Libraries.
-
-  You may place library facilities that are a work based on the
-Library side by side in a single library together with other library
-facilities that are not Applications and are not covered by this
-License, and convey such a combined library under terms of your
-choice, if you do both of the following:
-
-   a) Accompany the combined library with a copy of the same work based
-   on the Library, uncombined with any other library facilities,
-   conveyed under the terms of this License.
-
-   b) Give prominent notice with the combined library that part of it
-   is a work based on the Library, and explaining where to find the
-   accompanying uncombined form of the same work.
-
-  6. Revised Versions of the GNU Lesser General Public License.
-
-  The Free Software Foundation may publish revised and/or new versions
-of the GNU Lesser General Public License from time to time. Such new
-versions will be similar in spirit to the present version, but may
-differ in detail to address new problems or concerns.
-
-  Each version is given a distinguishing version number. If the
-Library as you received it specifies that a certain numbered version
-of the GNU Lesser General Public License "or any later version"
-applies to it, you have the option of following the terms and
-conditions either of that published version or of any later version
-published by the Free Software Foundation. If the Library as you
-received it does not specify a version number of the GNU Lesser
-General Public License, you may choose any version of the GNU Lesser
-General Public License ever published by the Free Software Foundation.
-
-  If the Library as you received it specifies that a proxy can decide
-whether future versions of the GNU Lesser General Public License shall
-apply, that proxy's public statement of acceptance of any version is
-permanent authorization for you to choose that version for the
-Library.
diff --git a/bindings/cxx/chip-info.cpp b/bindings/cxx/chip-info.cpp
index c4f0ab5..93dd6f5 100644
--- a/bindings/cxx/chip-info.cpp
+++ b/bindings/cxx/chip-info.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 // SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl>
 
 #include <ostream>
diff --git a/bindings/cxx/chip.cpp b/bindings/cxx/chip.cpp
index d6a3a43..8086839 100644
--- a/bindings/cxx/chip.cpp
+++ b/bindings/cxx/chip.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 // SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl>
 
 #include <ostream>
diff --git a/bindings/cxx/edge-event-buffer.cpp b/bindings/cxx/edge-event-buffer.cpp
index c7347a2..0d5cb36 100644
--- a/bindings/cxx/edge-event-buffer.cpp
+++ b/bindings/cxx/edge-event-buffer.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 // SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl>
 
 #include <iterator>
diff --git a/bindings/cxx/edge-event.cpp b/bindings/cxx/edge-event.cpp
index 5ff3af2..9ef311c 100644
--- a/bindings/cxx/edge-event.cpp
+++ b/bindings/cxx/edge-event.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 // SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl>
 
 #include <map>
diff --git a/bindings/cxx/exception.cpp b/bindings/cxx/exception.cpp
index 6957e78..378b249 100644
--- a/bindings/cxx/exception.cpp
+++ b/bindings/cxx/exception.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 // SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl>
 
 #include "internal.hpp"
diff --git a/bindings/cxx/gpiod.hpp b/bindings/cxx/gpiod.hpp
index b090af4..91e41a5 100644
--- a/bindings/cxx/gpiod.hpp
+++ b/bindings/cxx/gpiod.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 /**
diff --git a/bindings/cxx/gpiodcxx/chip-info.hpp b/bindings/cxx/gpiodcxx/chip-info.hpp
index b6bd0f8..e740e94 100644
--- a/bindings/cxx/gpiodcxx/chip-info.hpp
+++ b/bindings/cxx/gpiodcxx/chip-info.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2022 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 /**
diff --git a/bindings/cxx/gpiodcxx/chip.hpp b/bindings/cxx/gpiodcxx/chip.hpp
index 297db3d..4d67476 100644
--- a/bindings/cxx/gpiodcxx/chip.hpp
+++ b/bindings/cxx/gpiodcxx/chip.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 /**
diff --git a/bindings/cxx/gpiodcxx/edge-event-buffer.hpp b/bindings/cxx/gpiodcxx/edge-event-buffer.hpp
index 025517f..2482e8a 100644
--- a/bindings/cxx/gpiodcxx/edge-event-buffer.hpp
+++ b/bindings/cxx/gpiodcxx/edge-event-buffer.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 /**
diff --git a/bindings/cxx/gpiodcxx/edge-event.hpp b/bindings/cxx/gpiodcxx/edge-event.hpp
index 4fde561..47c256a 100644
--- a/bindings/cxx/gpiodcxx/edge-event.hpp
+++ b/bindings/cxx/gpiodcxx/edge-event.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 /**
diff --git a/bindings/cxx/gpiodcxx/exception.hpp b/bindings/cxx/gpiodcxx/exception.hpp
index e89b384..34737d2 100644
--- a/bindings/cxx/gpiodcxx/exception.hpp
+++ b/bindings/cxx/gpiodcxx/exception.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 /**
diff --git a/bindings/cxx/gpiodcxx/info-event.hpp b/bindings/cxx/gpiodcxx/info-event.hpp
index e99cbc4..69b88b6 100644
--- a/bindings/cxx/gpiodcxx/info-event.hpp
+++ b/bindings/cxx/gpiodcxx/info-event.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 /**
diff --git a/bindings/cxx/gpiodcxx/line-config.hpp b/bindings/cxx/gpiodcxx/line-config.hpp
index 8a3335c..58c9d87 100644
--- a/bindings/cxx/gpiodcxx/line-config.hpp
+++ b/bindings/cxx/gpiodcxx/line-config.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 /**
diff --git a/bindings/cxx/gpiodcxx/line-info.hpp b/bindings/cxx/gpiodcxx/line-info.hpp
index 26d25a9..8b10dc4 100644
--- a/bindings/cxx/gpiodcxx/line-info.hpp
+++ b/bindings/cxx/gpiodcxx/line-info.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 /**
diff --git a/bindings/cxx/gpiodcxx/line-request.hpp b/bindings/cxx/gpiodcxx/line-request.hpp
index dfe3e0f..fcc4e0e 100644
--- a/bindings/cxx/gpiodcxx/line-request.hpp
+++ b/bindings/cxx/gpiodcxx/line-request.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 /**
diff --git a/bindings/cxx/gpiodcxx/line-settings.hpp b/bindings/cxx/gpiodcxx/line-settings.hpp
index bacf359..1004ccd 100644
--- a/bindings/cxx/gpiodcxx/line-settings.hpp
+++ b/bindings/cxx/gpiodcxx/line-settings.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2022 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 /**
diff --git a/bindings/cxx/gpiodcxx/line.hpp b/bindings/cxx/gpiodcxx/line.hpp
index 5d0752a..2810571 100644
--- a/bindings/cxx/gpiodcxx/line.hpp
+++ b/bindings/cxx/gpiodcxx/line.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 /**
diff --git a/bindings/cxx/gpiodcxx/misc.hpp b/bindings/cxx/gpiodcxx/misc.hpp
index 1e41e9b..eab8eba 100644
--- a/bindings/cxx/gpiodcxx/misc.hpp
+++ b/bindings/cxx/gpiodcxx/misc.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2021 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 /**
diff --git a/bindings/cxx/gpiodcxx/request-builder.hpp b/bindings/cxx/gpiodcxx/request-builder.hpp
index 90cc8f0..192bd91 100644
--- a/bindings/cxx/gpiodcxx/request-builder.hpp
+++ b/bindings/cxx/gpiodcxx/request-builder.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2022 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 /**
diff --git a/bindings/cxx/gpiodcxx/request-config.hpp b/bindings/cxx/gpiodcxx/request-config.hpp
index b099eb1..6ebbf99 100644
--- a/bindings/cxx/gpiodcxx/request-config.hpp
+++ b/bindings/cxx/gpiodcxx/request-config.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 /**
diff --git a/bindings/cxx/gpiodcxx/timestamp.hpp b/bindings/cxx/gpiodcxx/timestamp.hpp
index 7143ab3..fcb4d8d 100644
--- a/bindings/cxx/gpiodcxx/timestamp.hpp
+++ b/bindings/cxx/gpiodcxx/timestamp.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2022 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 /**
diff --git a/bindings/cxx/info-event.cpp b/bindings/cxx/info-event.cpp
index 0b19ee9..1f6d0d7 100644
--- a/bindings/cxx/info-event.cpp
+++ b/bindings/cxx/info-event.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 // SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl>
 
 #include <map>
diff --git a/bindings/cxx/internal.cpp b/bindings/cxx/internal.cpp
index 9f1f38f..237d5d5 100644
--- a/bindings/cxx/internal.cpp
+++ b/bindings/cxx/internal.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 // SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl>
 
 #include <map>
diff --git a/bindings/cxx/internal.hpp b/bindings/cxx/internal.hpp
index db78af6..b64daf1 100644
--- a/bindings/cxx/internal.hpp
+++ b/bindings/cxx/internal.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 #ifndef __LIBGPIOD_CXX_INTERNAL_HPP__
diff --git a/bindings/cxx/line-config.cpp b/bindings/cxx/line-config.cpp
index 1179e0a..7e3dc8c 100644
--- a/bindings/cxx/line-config.cpp
+++ b/bindings/cxx/line-config.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 // SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl>
 
 #include <cstdlib>
diff --git a/bindings/cxx/line-info.cpp b/bindings/cxx/line-info.cpp
index 9931ed0..2117f68 100644
--- a/bindings/cxx/line-info.cpp
+++ b/bindings/cxx/line-info.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 // SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl>
 
 #include <map>
diff --git a/bindings/cxx/line-request.cpp b/bindings/cxx/line-request.cpp
index e8e0b96..f6b0a66 100644
--- a/bindings/cxx/line-request.cpp
+++ b/bindings/cxx/line-request.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 // SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl>
 
 #include <iterator>
diff --git a/bindings/cxx/line-settings.cpp b/bindings/cxx/line-settings.cpp
index 30d7899..300858a 100644
--- a/bindings/cxx/line-settings.cpp
+++ b/bindings/cxx/line-settings.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 // SPDX-FileCopyrightText: 2022 Bartosz Golaszewski <brgl@bgdev.pl>
 
 #include <map>
diff --git a/bindings/cxx/line.cpp b/bindings/cxx/line.cpp
index d99e8fa..d6a92c1 100644
--- a/bindings/cxx/line.cpp
+++ b/bindings/cxx/line.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 // SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl>
 
 #include <iterator>
diff --git a/bindings/cxx/misc.cpp b/bindings/cxx/misc.cpp
index dde48e0..eba0b46 100644
--- a/bindings/cxx/misc.cpp
+++ b/bindings/cxx/misc.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 // SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl>
 
 #include "internal.hpp"
diff --git a/bindings/cxx/request-builder.cpp b/bindings/cxx/request-builder.cpp
index d11e47b..87ee2fe 100644
--- a/bindings/cxx/request-builder.cpp
+++ b/bindings/cxx/request-builder.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 // SPDX-FileCopyrightText: 2022 Bartosz Golaszewski <brgl@bgdev.pl>
 
 #include <ostream>
diff --git a/bindings/cxx/request-config.cpp b/bindings/cxx/request-config.cpp
index e578b15..b44b8b6 100644
--- a/bindings/cxx/request-config.cpp
+++ b/bindings/cxx/request-config.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 // SPDX-FileCopyrightText: 2021 Bartosz Golaszewski <brgl@bgdev.pl>
 
 #include <ostream>
diff --git a/bindings/cxx/tests/gpiosim.cpp b/bindings/cxx/tests/gpiosim.cpp
index 7267e6d..4bda5a2 100644
--- a/bindings/cxx/tests/gpiosim.cpp
+++ b/bindings/cxx/tests/gpiosim.cpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2022 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 #include <map>
diff --git a/bindings/cxx/tests/gpiosim.hpp b/bindings/cxx/tests/gpiosim.hpp
index 320ae96..8151af6 100644
--- a/bindings/cxx/tests/gpiosim.hpp
+++ b/bindings/cxx/tests/gpiosim.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2022 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 #ifndef __GPIOD_CXX_GPIOSIM_HPP__
diff --git a/bindings/cxx/tests/helpers.cpp b/bindings/cxx/tests/helpers.cpp
index 6534fdb..eb2c3db 100644
--- a/bindings/cxx/tests/helpers.cpp
+++ b/bindings/cxx/tests/helpers.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-3.0-or-later
+// SPDX-License-Identifier: LGPL-2.1-or-later
 // SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl>
 
 #include "helpers.hpp"
diff --git a/bindings/cxx/tests/helpers.hpp b/bindings/cxx/tests/helpers.hpp
index 157d221..62d9827 100644
--- a/bindings/cxx/tests/helpers.hpp
+++ b/bindings/cxx/tests/helpers.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /* SPDX-FileCopyrightText: 2021-2022 Bartosz Golaszewski <brgl@bgdev.pl> */
 
 #ifndef __GPIOD_CXX_TEST_HELPERS_HPP__
