diff --git a/ql-qlf-plugin/qlf_k6n10f/TDP18Kx18_FIFO.v b/ql-qlf-plugin/qlf_k6n10f/TDP18Kx18_FIFO.v
index c9d0b8a..a68e88e 100644
--- a/ql-qlf-plugin/qlf_k6n10f/TDP18Kx18_FIFO.v
+++ b/ql-qlf-plugin/qlf_k6n10f/TDP18Kx18_FIFO.v
@@ -1,10 +1,18 @@
-// Copyright (C) 2019-2022 The SymbiFlow Authors
+// Copyright 2020-2022 F4PGA Authors
 //
-// Use of this source code is governed by a ISC-style
-// license that can be found in the LICENSE file or at
-// https://opensource.org/licenses/ISC
+// 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
 //
-// SPDX-License-Identifier: ISC
+//     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
 
 module TDP18K_FIFO (
 	RMODE_A,
diff --git a/ql-qlf-plugin/qlf_k6n10f/arith_map.v b/ql-qlf-plugin/qlf_k6n10f/arith_map.v
index 35bd691..908b171 100644
--- a/ql-qlf-plugin/qlf_k6n10f/arith_map.v
+++ b/ql-qlf-plugin/qlf_k6n10f/arith_map.v
@@ -1,10 +1,18 @@
-// Copyright (C) 2019-2022 The SymbiFlow Authors
+// Copyright 2020-2022 F4PGA Authors
 //
-// Use of this source code is governed by a ISC-style
-// license that can be found in the LICENSE file or at
-// https://opensource.org/licenses/ISC
+// 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
 //
-// SPDX-License-Identifier: ISC
+//     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
 (* techmap_celltype = "$alu" *)
 module _80_quicklogic_alu (A, B, CI, BI, X, Y, CO);
 	parameter A_SIGNED = 0;
diff --git a/ql-qlf-plugin/qlf_k6n10f/brams_map.v b/ql-qlf-plugin/qlf_k6n10f/brams_map.v
index e1b7f27..4df5ec2 100644
--- a/ql-qlf-plugin/qlf_k6n10f/brams_map.v
+++ b/ql-qlf-plugin/qlf_k6n10f/brams_map.v
@@ -1,10 +1,18 @@
-// Copyright (C) 2019-2022 The SymbiFlow Authors
+// Copyright 2020-2022 F4PGA Authors
 //
-// Use of this source code is governed by a ISC-style
-// license that can be found in the LICENSE file or at
-// https://opensource.org/licenses/ISC
+// 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
 //
-// SPDX-License-Identifier: ISC
+//     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
 
 `define MODE_36 3'b111	// 36 or 32-bit
 `define MODE_18 3'b110	// 18 or 16-bit
diff --git a/ql-qlf-plugin/qlf_k6n10f/cells_sim.v b/ql-qlf-plugin/qlf_k6n10f/cells_sim.v
index f382797..dff4af3 100644
--- a/ql-qlf-plugin/qlf_k6n10f/cells_sim.v
+++ b/ql-qlf-plugin/qlf_k6n10f/cells_sim.v
@@ -1,10 +1,18 @@
-// Copyright (C) 2019-2022 The SymbiFlow Authors
+// Copyright 2020-2022 F4PGA Authors
 //
-// Use of this source code is governed by a ISC-style
-// license that can be found in the LICENSE file or at
-// https://opensource.org/licenses/ISC
+// 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
 //
-// SPDX-License-Identifier: ISC
+//     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
 
 (* abc9_flop, lib_whitebox *)
 module sh_dff(
diff --git a/ql-qlf-plugin/qlf_k6n10f/dsp_final_map.v b/ql-qlf-plugin/qlf_k6n10f/dsp_final_map.v
index 79c2f52..6967a44 100644
--- a/ql-qlf-plugin/qlf_k6n10f/dsp_final_map.v
+++ b/ql-qlf-plugin/qlf_k6n10f/dsp_final_map.v
@@ -1,10 +1,18 @@
-// Copyright (C) 2019-2022 The SymbiFlow Authors
+// Copyright 2020-2022 F4PGA Authors
 //
-// Use of this source code is governed by a ISC-style
-// license that can be found in the LICENSE file or at
-// https://opensource.org/licenses/ISC
+// 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
 //
-// SPDX-License-Identifier: ISC
+//     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
 
 module dsp_t1_20x18x64 (
     input  [19:0] a_i,
diff --git a/ql-qlf-plugin/qlf_k6n10f/dsp_map.v b/ql-qlf-plugin/qlf_k6n10f/dsp_map.v
index 681d113..fbde7fd 100644
--- a/ql-qlf-plugin/qlf_k6n10f/dsp_map.v
+++ b/ql-qlf-plugin/qlf_k6n10f/dsp_map.v
@@ -1,10 +1,18 @@
-// Copyright (C) 2019-2022 The SymbiFlow Authors
+// Copyright 2020-2022 F4PGA Authors
 //
-// Use of this source code is governed by a ISC-style
-// license that can be found in the LICENSE file or at
-// https://opensource.org/licenses/ISC
+// 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
 //
-// SPDX-License-Identifier: ISC
+//     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
 
 module \$__QL_MUL20X18 (input [19:0] A, input [17:0] B, output [37:0] Y);
     parameter A_SIGNED = 0;
diff --git a/ql-qlf-plugin/qlf_k6n10f/ffs_map.v b/ql-qlf-plugin/qlf_k6n10f/ffs_map.v
index 8e30585..273f28e 100644
--- a/ql-qlf-plugin/qlf_k6n10f/ffs_map.v
+++ b/ql-qlf-plugin/qlf_k6n10f/ffs_map.v
@@ -1,10 +1,18 @@
-// Copyright (C) 2019-2022 The SymbiFlow Authors
+// Copyright 2020-2022 F4PGA Authors
 //
-// Use of this source code is governed by a ISC-style
-// license that can be found in the LICENSE file or at
-// https://opensource.org/licenses/ISC
+// 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
 //
-// SPDX-License-Identifier: ISC
+//     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
 
 // Basic DFF
 
diff --git a/ql-qlf-plugin/qlf_k6n10f/sram1024x18.v b/ql-qlf-plugin/qlf_k6n10f/sram1024x18.v
index 88a571d..60cd586 100644
--- a/ql-qlf-plugin/qlf_k6n10f/sram1024x18.v
+++ b/ql-qlf-plugin/qlf_k6n10f/sram1024x18.v
@@ -1,10 +1,18 @@
-// Copyright (C) 2019-2022 The SymbiFlow Authors
+// Copyright 2020-2022 F4PGA Authors
 //
-// Use of this source code is governed by a ISC-style
-// license that can be found in the LICENSE file or at
-// https://opensource.org/licenses/ISC
+// 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
 //
-// SPDX-License-Identifier: ISC
+//     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
 
 module sram1024x18 (
 	clk_a,
diff --git a/ql-qlf-plugin/qlf_k6n10f/ufifo_ctl.v b/ql-qlf-plugin/qlf_k6n10f/ufifo_ctl.v
index b1f7164..0c1dcc0 100644
--- a/ql-qlf-plugin/qlf_k6n10f/ufifo_ctl.v
+++ b/ql-qlf-plugin/qlf_k6n10f/ufifo_ctl.v
@@ -1,10 +1,18 @@
-// Copyright (C) 2019-2022 The SymbiFlow Authors
+// Copyright 2020-2022 F4PGA Authors
 //
-// Use of this source code is governed by a ISC-style
-// license that can be found in the LICENSE file or at
-// https://opensource.org/licenses/ISC
+// 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
 //
-// SPDX-License-Identifier: ISC
+//     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
 
 module fifo_ctl (
 	raddr,