diff --git a/eos-s3/environment.yml b/eos-s3/environment.yml
index ba1a59f..8eab9d6 100644
--- a/eos-s3/environment.yml
+++ b/eos-s3/environment.yml
@@ -1,6 +1,24 @@
+# Copyright (C) 2020-2022 F4PGA Authors.
+#
+# 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
+#
+#     https://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
+
 name: eos-s3
+
 channels:
   - litex-hub
+
 dependencies:
   - litex-hub::yosys=0.19_10_g0098b32c6=20220706_001518_py37
   - litex-hub::symbiflow-yosys-plugins=1.0.0_7_1002_gd149693=20220706_001518
diff --git a/eos-s3/requirements.txt b/eos-s3/requirements.txt
index fe33f41..4e6fa9e 100644
--- a/eos-s3/requirements.txt
+++ b/eos-s3/requirements.txt
@@ -1,3 +1,19 @@
+# Copyright (C) 2020-2022 F4PGA Authors.
+#
+# 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
+#
+#     https://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
+
 python-constraint
 serial
 git+https://github.com/antmicro/quicklogic-fasm@607849ec0bdef8740be33dbaa49d15a3d400f809