diff --git a/src/brei-shared.c b/src/brei-shared.c
index 0f4f71e..62c745a 100644
--- a/src/brei-shared.c
+++ b/src/brei-shared.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/brei-shared.h b/src/brei-shared.h
index 590ffe6..d157dbf 100644
--- a/src/brei-shared.h
+++ b/src/brei-shared.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libei-device.c b/src/libei-device.c
index c1fc4c7..66918d3 100644
--- a/src/libei-device.c
+++ b/src/libei-device.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libei-event.c b/src/libei-event.c
index f2e4c0a..dccf534 100644
--- a/src/libei-event.c
+++ b/src/libei-event.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2021 Red Hat, Inc.
  *
diff --git a/src/libei-fd.c b/src/libei-fd.c
index 89a81bb..b7aa784 100644
--- a/src/libei-fd.c
+++ b/src/libei-fd.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libei-log.c b/src/libei-log.c
index 92cca3a..71afee4 100644
--- a/src/libei-log.c
+++ b/src/libei-log.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libei-portal.c b/src/libei-portal.c
index f146d1d..9969650 100644
--- a/src/libei-portal.c
+++ b/src/libei-portal.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libei-private.h b/src/libei-private.h
index ec6c89c..c62dc64 100644
--- a/src/libei-private.h
+++ b/src/libei-private.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libei-property.c b/src/libei-property.c
index 18914ac..d1edf2e 100644
--- a/src/libei-property.c
+++ b/src/libei-property.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2021 Red Hat, Inc.
  *
diff --git a/src/libei-proto.c b/src/libei-proto.c
index 1d59450..ac73d22 100644
--- a/src/libei-proto.c
+++ b/src/libei-proto.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libei-proto.h b/src/libei-proto.h
index d013fdd..b68115c 100644
--- a/src/libei-proto.h
+++ b/src/libei-proto.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libei-region.c b/src/libei-region.c
index 5d4c92e..83891f7 100644
--- a/src/libei-region.c
+++ b/src/libei-region.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libei-seat.c b/src/libei-seat.c
index 37c5c0d..b3a0abb 100644
--- a/src/libei-seat.c
+++ b/src/libei-seat.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libei-socket.c b/src/libei-socket.c
index d86ba1d..447c6a7 100644
--- a/src/libei-socket.c
+++ b/src/libei-socket.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libei-stubs.c b/src/libei-stubs.c
index 09c32c4..7c934bd 100644
--- a/src/libei-stubs.c
+++ b/src/libei-stubs.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libei.c b/src/libei.c
index 9cba4a3..ed24ea0 100644
--- a/src/libei.c
+++ b/src/libei.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libei.h b/src/libei.h
index 0328175..67dbff8 100644
--- a/src/libei.h
+++ b/src/libei.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libeis-client.c b/src/libeis-client.c
index 097d3b6..8c016a0 100644
--- a/src/libeis-client.c
+++ b/src/libeis-client.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libeis-device.c b/src/libeis-device.c
index ac6956b..5a0c179 100644
--- a/src/libeis-device.c
+++ b/src/libeis-device.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libeis-event.c b/src/libeis-event.c
index 762b910..c8f8c3c 100644
--- a/src/libeis-event.c
+++ b/src/libeis-event.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libeis-fd.c b/src/libeis-fd.c
index 7fb4e58..2c00aee 100644
--- a/src/libeis-fd.c
+++ b/src/libeis-fd.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libeis-log.c b/src/libeis-log.c
index a83fe54..12a9522 100644
--- a/src/libeis-log.c
+++ b/src/libeis-log.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libeis-private.h b/src/libeis-private.h
index 106b30a..47f06a4 100644
--- a/src/libeis-private.h
+++ b/src/libeis-private.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libeis-property.c b/src/libeis-property.c
index 02fd4a0..db8d5b3 100644
--- a/src/libeis-property.c
+++ b/src/libeis-property.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2021 Red Hat, Inc.
  *
diff --git a/src/libeis-proto.c b/src/libeis-proto.c
index c655bf0..7dba18a 100644
--- a/src/libeis-proto.c
+++ b/src/libeis-proto.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libeis-proto.h b/src/libeis-proto.h
index f599289..f4186cb 100644
--- a/src/libeis-proto.h
+++ b/src/libeis-proto.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libeis-region.c b/src/libeis-region.c
index 0dd3c89..2ee8db1 100644
--- a/src/libeis-region.c
+++ b/src/libeis-region.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libeis-seat.c b/src/libeis-seat.c
index 6ffa041..76154f4 100644
--- a/src/libeis-seat.c
+++ b/src/libeis-seat.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libeis-socket.c b/src/libeis-socket.c
index a9cf9f9..e3ba531 100644
--- a/src/libeis-socket.c
+++ b/src/libeis-socket.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libeis.c b/src/libeis.c
index 694f568..366cc73 100644
--- a/src/libeis.c
+++ b/src/libeis.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libeis.h b/src/libeis.h
index 248aab8..11c2cfa 100644
--- a/src/libeis.h
+++ b/src/libeis.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libreis.c b/src/libreis.c
index c07c714..f16e736 100644
--- a/src/libreis.c
+++ b/src/libreis.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/libreis.h b/src/libreis.h
index 3f0921f..4332c3b 100644
--- a/src/libreis.h
+++ b/src/libreis.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/util-bits.h b/src/util-bits.h
index dd02dc6..2139bd5 100644
--- a/src/util-bits.h
+++ b/src/util-bits.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2008-2011 Kristian Høgsberg
  * Copyright © 2011 Intel Corporation
diff --git a/src/util-color.h b/src/util-color.h
index 3af45d3..e666406 100644
--- a/src/util-color.h
+++ b/src/util-color.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/util-io.c b/src/util-io.c
index 54ab74e..702da88 100644
--- a/src/util-io.c
+++ b/src/util-io.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/util-io.h b/src/util-io.h
index 5775cdc..b95f521 100644
--- a/src/util-io.h
+++ b/src/util-io.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/util-list.c b/src/util-list.c
index 9a79e3b..90f5ac0 100644
--- a/src/util-list.c
+++ b/src/util-list.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2008-2011 Kristian Høgsberg
  * Copyright © 2011 Intel Corporation
diff --git a/src/util-list.h b/src/util-list.h
index 77aaca1..283d634 100644
--- a/src/util-list.h
+++ b/src/util-list.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2008-2011 Kristian Høgsberg
  * Copyright © 2011 Intel Corporation
diff --git a/src/util-logger.c b/src/util-logger.c
index 44c9ebe..aa80fa6 100644
--- a/src/util-logger.c
+++ b/src/util-logger.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/util-logger.h b/src/util-logger.h
index b456423..012870c 100644
--- a/src/util-logger.h
+++ b/src/util-logger.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/util-macros.h b/src/util-macros.h
index 5503caa..7fb131e 100644
--- a/src/util-macros.h
+++ b/src/util-macros.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2008-2011 Kristian Høgsberg
  * Copyright © 2011 Intel Corporation
diff --git a/src/util-mem.h b/src/util-mem.h
index 3e946e5..41fb520 100644
--- a/src/util-mem.h
+++ b/src/util-mem.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/util-memfile.c b/src/util-memfile.c
index c6e3c21..96caeff 100644
--- a/src/util-memfile.c
+++ b/src/util-memfile.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/util-memfile.h b/src/util-memfile.h
index 0de39bb..66bdc28 100644
--- a/src/util-memfile.h
+++ b/src/util-memfile.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/util-munit.c b/src/util-munit.c
index 3b4dbe8..5405dcb 100644
--- a/src/util-munit.c
+++ b/src/util-munit.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/util-munit.h b/src/util-munit.h
index 74dc24a..003a949 100644
--- a/src/util-munit.h
+++ b/src/util-munit.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/util-object.h b/src/util-object.h
index b587ac7..c9f392d 100644
--- a/src/util-object.h
+++ b/src/util-object.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/util-sources.c b/src/util-sources.c
index 6c993ff..fbc40be 100644
--- a/src/util-sources.c
+++ b/src/util-sources.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/util-sources.h b/src/util-sources.h
index 65b2610..837bcae 100644
--- a/src/util-sources.h
+++ b/src/util-sources.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/util-strings.c b/src/util-strings.c
index 9cd3d5e..758c97d 100644
--- a/src/util-strings.c
+++ b/src/util-strings.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2008 Kristian Høgsberg
  * Copyright © 2013-2015 Red Hat, Inc.
diff --git a/src/util-strings.h b/src/util-strings.h
index d2891c0..0758e24 100644
--- a/src/util-strings.h
+++ b/src/util-strings.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2008 Kristian Høgsberg
  * Copyright © 2013-2015 Red Hat, Inc.
diff --git a/src/util-structs.h b/src/util-structs.h
index fe21b1f..64fa2df 100644
--- a/src/util-structs.h
+++ b/src/util-structs.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/src/util-tristate.h b/src/util-tristate.h
index 4cdb6b6..5c593b5 100644
--- a/src/util-tristate.h
+++ b/src/util-tristate.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/test/buildtest.c b/test/buildtest.c
index ed5c4fb..ad6f870 100644
--- a/test/buildtest.c
+++ b/test/buildtest.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 #if INCLUDE_LIBEI
 #include <libei.h>
 #endif
diff --git a/test/eierpecken.c b/test/eierpecken.c
index a5f5052..a674bfe 100644
--- a/test/eierpecken.c
+++ b/test/eierpecken.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/test/eierpecken.h b/test/eierpecken.h
index eb890a6..9a4e439 100644
--- a/test/eierpecken.h
+++ b/test/eierpecken.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/test/test-ei-device.c b/test/test-ei-device.c
index 01a4058..0231db3 100644
--- a/test/test-ei-device.c
+++ b/test/test-ei-device.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/test/test-ei-seat.c b/test/test-ei-seat.c
index 7602d04..080004b 100644
--- a/test/test-ei-seat.c
+++ b/test/test-ei-seat.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/test/test-ei.c b/test/test-ei.c
index c288526..8272d12 100644
--- a/test/test-ei.c
+++ b/test/test-ei.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/test/test-eis.c b/test/test-eis.c
index d2a8200..5a219b0 100644
--- a/test/test-eis.c
+++ b/test/test-eis.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/test/test-main.c b/test/test-main.c
index 66a24e1..4eb9789 100644
--- a/test/test-main.c
+++ b/test/test-main.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 #include "util-munit.h"
 
 int
diff --git a/test/unit-tests.c b/test/unit-tests.c
index f27c676..0e4980b 100644
--- a/test/unit-tests.c
+++ b/test/unit-tests.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/tools/ei-demo-client.c b/tools/ei-demo-client.c
index 848e29b..90d59e0 100644
--- a/tools/ei-demo-client.c
+++ b/tools/ei-demo-client.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/tools/eis-demo-server-uinput.c b/tools/eis-demo-server-uinput.c
index 2dd5d9a..536c8c5 100644
--- a/tools/eis-demo-server-uinput.c
+++ b/tools/eis-demo-server-uinput.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/tools/eis-demo-server.c b/tools/eis-demo-server.c
index 05231b0..61c4845 100644
--- a/tools/eis-demo-server.c
+++ b/tools/eis-demo-server.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/tools/eis-demo-server.h b/tools/eis-demo-server.h
index 18e6fa2..5f57ed0 100644
--- a/tools/eis-demo-server.h
+++ b/tools/eis-demo-server.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *
diff --git a/tools/eis-fake-impl-portal.c b/tools/eis-fake-impl-portal.c
index 45ade6c..d235a56 100644
--- a/tools/eis-fake-impl-portal.c
+++ b/tools/eis-fake-impl-portal.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2021 Red Hat, Inc.
  *
diff --git a/tools/eis-fake-portal.c b/tools/eis-fake-portal.c
index 9315fb2..8503bcb 100644
--- a/tools/eis-fake-portal.c
+++ b/tools/eis-fake-portal.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: MIT */
 /*
  * Copyright © 2020 Red Hat, Inc.
  *