diff --git a/kala-collection/src/main/java/kala/collection/AnyCollection.java b/kala-collection/src/main/java/kala/collection/AnyCollection.java
index a41548fd..44028fb4 100644
--- a/kala-collection/src/main/java/kala/collection/AnyCollection.java
+++ b/kala-collection/src/main/java/kala/collection/AnyCollection.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2024 Glavo
+ *
+ * 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.
+ */
 package kala.collection;
 
 import kala.Equatable;
diff --git a/kala-collection/src/main/java/kala/collection/AnyCollectionLike.java b/kala-collection/src/main/java/kala/collection/AnyCollectionLike.java
index 4c130406..64f9bc50 100644
--- a/kala-collection/src/main/java/kala/collection/AnyCollectionLike.java
+++ b/kala-collection/src/main/java/kala/collection/AnyCollectionLike.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2024 Glavo
+ *
+ * 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.
+ */
 package kala.collection;
 
 import kala.collection.base.AnyTraversable;