diff --git a/xc7/environment.yml b/xc7/environment.yml
index 7618e99..2e4434d 100644
--- a/xc7/environment.yml
+++ b/xc7/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: xc7
+
 channels:
   - litex-hub
+
 dependencies:
   - litex-hub::openfpgaloader==0.8.0_114_g057ce93=20220706_155948
   - litex-hub::prjxray-tools=0.1_3015_gae546d6b=20220708_203356
diff --git a/xc7/requirements.txt b/xc7/requirements.txt
index 0814d6f..f563dc8 100644
--- a/xc7/requirements.txt
+++ b/xc7/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
+
 intervaltree
 junit-xml
 numpy