diff --git a/src/test/resources/consumer.yaml b/src/test/resources/consumer.yaml
index dede6fa5..6e848604 100644
--- a/src/test/resources/consumer.yaml
+++ b/src/test/resources/consumer.yaml
@@ -1,3 +1,25 @@
+# MIT License
+#
+# Copyright (c) 2023 Aliaksei Bialiauski, EO-CQRS
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
 bootstrap-servers: localhost:9092
 group-id: "1"
 key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
diff --git a/src/test/resources/producer.yaml b/src/test/resources/producer.yaml
index 367a04f0..80e00e43 100644
--- a/src/test/resources/producer.yaml
+++ b/src/test/resources/producer.yaml
@@ -1,3 +1,25 @@
+# MIT License
+#
+# Copyright (c) 2023 Aliaksei Bialiauski, EO-CQRS
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
 bootstrap-servers: localhost:9092
 key-serializer: org.apache.kafka.common.serialization.StringSerializer
-value-serializer: org.apache.kafka.common.serialization.StringSerializer
\ No newline at end of file
+value-serializer: org.apache.kafka.common.serialization.StringSerializer