diff --git a/verilog/gl/DFFRAM.v b/verilog/gl/DFFRAM.v
index 5db928b..b7b170d 100644
--- a/verilog/gl/DFFRAM.v
+++ b/verilog/gl/DFFRAM.v
@@ -1,4 +1,4 @@
-// Copyright 2020 Efabless Corporation
+// SPDX-FileCopyrightText: 2020 Efabless Corporation
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/verilog/gl/caravel.v b/verilog/gl/caravel.v
index 243ec45..1adbbb4 100644
--- a/verilog/gl/caravel.v
+++ b/verilog/gl/caravel.v
@@ -1,4 +1,4 @@
-// Copyright 2020 Efabless Corporation
+// SPDX-FileCopyrightText: 2020 Efabless Corporation
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/verilog/gl/chip_io.v b/verilog/gl/chip_io.v
index 2caf6b7..f6a628b 100644
--- a/verilog/gl/chip_io.v
+++ b/verilog/gl/chip_io.v
@@ -1,4 +1,4 @@
-// Copyright 2020 Efabless Corporation
+// SPDX-FileCopyrightText: 2020 Efabless Corporation
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/verilog/gl/digital_pll.v b/verilog/gl/digital_pll.v
index 72b7592..85db179 100644
--- a/verilog/gl/digital_pll.v
+++ b/verilog/gl/digital_pll.v
@@ -1,4 +1,4 @@
-// Copyright 2020 Efabless Corporation
+// SPDX-FileCopyrightText: 2020 Efabless Corporation
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/verilog/gl/gpio_control_block.v b/verilog/gl/gpio_control_block.v
index 66e4737..bf9db51 100644
--- a/verilog/gl/gpio_control_block.v
+++ b/verilog/gl/gpio_control_block.v
@@ -1,4 +1,4 @@
-// Copyright 2020 Efabless Corporation
+// SPDX-FileCopyrightText: 2020 Efabless Corporation
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/verilog/gl/mgmt_core.v b/verilog/gl/mgmt_core.v
index 833b929..fa280e8 100644
--- a/verilog/gl/mgmt_core.v
+++ b/verilog/gl/mgmt_core.v
@@ -1,4 +1,4 @@
-// Copyright 2020 Efabless Corporation
+// SPDX-FileCopyrightText: 2020 Efabless Corporation
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/verilog/gl/mgmt_protect.v b/verilog/gl/mgmt_protect.v
index c7f34da..39cc8d0 100644
--- a/verilog/gl/mgmt_protect.v
+++ b/verilog/gl/mgmt_protect.v
@@ -1,4 +1,4 @@
-// Copyright 2020 Efabless Corporation
+// SPDX-FileCopyrightText: 2020 Efabless Corporation
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/verilog/gl/mgmt_protect_hv.v b/verilog/gl/mgmt_protect_hv.v
index 1c18bf4..92669b7 100644
--- a/verilog/gl/mgmt_protect_hv.v
+++ b/verilog/gl/mgmt_protect_hv.v
@@ -1,4 +1,4 @@
-// Copyright 2020 Efabless Corporation
+// SPDX-FileCopyrightText: 2020 Efabless Corporation
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/verilog/gl/simple_por.v b/verilog/gl/simple_por.v
index 082b567..fe9d7c2 100644
--- a/verilog/gl/simple_por.v
+++ b/verilog/gl/simple_por.v
@@ -1,4 +1,4 @@
-// Copyright 2020 Efabless Corporation
+// SPDX-FileCopyrightText: 2020 Efabless Corporation
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/verilog/gl/sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped.v b/verilog/gl/sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped.v
index c070cc6..7b591d3 100644
--- a/verilog/gl/sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped.v
+++ b/verilog/gl/sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped.v
@@ -1,4 +1,4 @@
-// Copyright 2020 Efabless Corporation
+// SPDX-FileCopyrightText: 2020 Efabless Corporation
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/verilog/gl/storage.v b/verilog/gl/storage.v
index 743a4fc..f212dc2 100644
--- a/verilog/gl/storage.v
+++ b/verilog/gl/storage.v
@@ -1,4 +1,4 @@
-// Copyright 2020 Efabless Corporation
+// SPDX-FileCopyrightText: 2020 Efabless Corporation
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/verilog/gl/user_id_programming.v b/verilog/gl/user_id_programming.v
index 4cdbaf3..0282cfa 100644
--- a/verilog/gl/user_id_programming.v
+++ b/verilog/gl/user_id_programming.v
@@ -1,4 +1,4 @@
-// Copyright 2020 Efabless Corporation
+// SPDX-FileCopyrightText: 2020 Efabless Corporation
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/verilog/gl/user_proj_example.v b/verilog/gl/user_proj_example.v
index 7a25bdb..3d8710e 100644
--- a/verilog/gl/user_proj_example.v
+++ b/verilog/gl/user_proj_example.v
@@ -1,4 +1,4 @@
-// Copyright 2020 Efabless Corporation
+// SPDX-FileCopyrightText: 2020 Efabless Corporation
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/verilog/gl/user_project_wrapper.v b/verilog/gl/user_project_wrapper.v
index ff8dc73..6cf5a57 100644
--- a/verilog/gl/user_project_wrapper.v
+++ b/verilog/gl/user_project_wrapper.v
@@ -1,4 +1,4 @@
-// Copyright 2020 Efabless Corporation
+// SPDX-FileCopyrightText: 2020 Efabless Corporation
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.