diff --git a/verilog/dv/fibonacci_test/test_caravel.py b/verilog/dv/fibonacci_test/test_caravel.py
index caefaf7..b33beb0 100644
--- a/verilog/dv/fibonacci_test/test_caravel.py
+++ b/verilog/dv/fibonacci_test/test_caravel.py
@@ -1,3 +1,17 @@
+# SPDX-FileCopyrightText: 2021 Konrad Rzeszutek Wilk
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# SPDX-License-Identifier: Apache-2.0
 import cocotb
 from cocotb.clock import Clock
 from cocotb.binary import BinaryValue
diff --git a/verilog/dv/sha1_test/test_caravel.py b/verilog/dv/sha1_test/test_caravel.py
index 6a3f870..2975502 100644
--- a/verilog/dv/sha1_test/test_caravel.py
+++ b/verilog/dv/sha1_test/test_caravel.py
@@ -1,3 +1,17 @@
+# SPDX-FileCopyrightText: 2021 Konrad Rzeszutek Wilk
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# SPDX-License-Identifier: Apache-2.0
 import cocotb
 from cocotb.clock import Clock
 from cocotb.binary import BinaryValue
diff --git a/verilog/rtl/fibonacci/src/clkdiv.v b/verilog/rtl/fibonacci/src/clkdiv.v
index 70db777..697d8f7 100644
--- a/verilog/rtl/fibonacci/src/clkdiv.v
+++ b/verilog/rtl/fibonacci/src/clkdiv.v
@@ -1,3 +1,17 @@
+// SPDX-FileCopyrightText: 2021 Konrad Rzeszutek Wilk
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// SPDX-License-Identifier: Apache-2.0
 `timescale 1ns / 1ps
 
 module clkdiv #(parameter WIDTH=32) (
diff --git a/verilog/rtl/fibonacci/src/fibonacci.v b/verilog/rtl/fibonacci/src/fibonacci.v
index 53c41ac..f8bbe0b 100644
--- a/verilog/rtl/fibonacci/src/fibonacci.v
+++ b/verilog/rtl/fibonacci/src/fibonacci.v
@@ -1,3 +1,17 @@
+// SPDX-FileCopyrightText: 2021 Konrad Rzeszutek Wilk
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// SPDX-License-Identifier: Apache-2.0
 `default_nettype none
 `timescale 1ns/1ns
 
diff --git a/verilog/rtl/fibonacci/src/wb_logic.v b/verilog/rtl/fibonacci/src/wb_logic.v
index fc451ed..6e658fc 100644
--- a/verilog/rtl/fibonacci/src/wb_logic.v
+++ b/verilog/rtl/fibonacci/src/wb_logic.v
@@ -1,3 +1,17 @@
+// SPDX-FileCopyrightText: 2021 Konrad Rzeszutek Wilk
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// SPDX-License-Identifier: Apache-2.0
 `default_nettype none
 `timescale 1ns/1ns
 `ifdef FORMAL
diff --git a/verilog/rtl/fibonacci/src/wrapper.v b/verilog/rtl/fibonacci/src/wrapper.v
index 456e51a..4cd4507 100644
--- a/verilog/rtl/fibonacci/src/wrapper.v
+++ b/verilog/rtl/fibonacci/src/wrapper.v
@@ -1,3 +1,17 @@
+// SPDX-FileCopyrightText: 2021 Konrad Rzeszutek Wilk
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// SPDX-License-Identifier: Apache-2.0
 `default_nettype none
 `timescale 1ns/1ns
 `ifdef FORMAL
diff --git a/verilog/rtl/sha1/src/sha1_wb.v b/verilog/rtl/sha1/src/sha1_wb.v
index a52e033..8170ea0 100644
--- a/verilog/rtl/sha1/src/sha1_wb.v
+++ b/verilog/rtl/sha1/src/sha1_wb.v
@@ -1,3 +1,17 @@
+// SPDX-FileCopyrightText: 2021 Konrad Rzeszutek Wilk
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// SPDX-License-Identifier: Apache-2.0
 `default_nettype none
 `timescale 1ns/1ns
 `ifdef FORMAL
diff --git a/verilog/rtl/sha1/src/wrapper_sha1.v b/verilog/rtl/sha1/src/wrapper_sha1.v
index 4459881..623ba35 100644
--- a/verilog/rtl/sha1/src/wrapper_sha1.v
+++ b/verilog/rtl/sha1/src/wrapper_sha1.v
@@ -1,3 +1,17 @@
+// SPDX-FileCopyrightText: 2021 Konrad Rzeszutek Wilk
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// SPDX-License-Identifier: Apache-2.0
 `default_nettype none
 `timescale 1ns/1ns
 `ifdef FORMAL