diff --git a/author/author.go b/author/author.go
index e2e9508..0114905 100644
--- a/author/author.go
+++ b/author/author.go
@@ -1,5 +1,5 @@
 /*
- * Copyright © 2018 A Bunch Tell LLC.
+ * Copyright © 2018-2020 A Bunch Tell LLC.
  *
  * This file is part of WriteFreely.
  *
diff --git a/oauth_signup.go b/oauth_signup.go
index 10d2306..220afbd 100644
--- a/oauth_signup.go
+++ b/oauth_signup.go
@@ -1,3 +1,13 @@
+/*
+ * Copyright © 2020 A Bunch Tell LLC.
+ *
+ * This file is part of WriteFreely.
+ *
+ * WriteFreely is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, included
+ * in the LICENSE file in this source code package.
+ */
+
 package writefreely
 
 import (
diff --git a/oauth_slack.go b/oauth_slack.go
index f700c2c..1db3613 100644
--- a/oauth_slack.go
+++ b/oauth_slack.go
@@ -1,3 +1,13 @@
+/*
+ * Copyright © 2020 A Bunch Tell LLC.
+ *
+ * This file is part of WriteFreely.
+ *
+ * WriteFreely is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, included
+ * in the LICENSE file in this source code package.
+ */
+
 package writefreely
 
 import (