diff --git a/app/observers/cacher.rb b/app/observers/cacher.rb
index ea87863f93a..256b80c86fb 100644
--- a/app/observers/cacher.rb
+++ b/app/observers/cacher.rb
@@ -1,3 +1,20 @@
+#
+# Copyright (C) 2011 - present Instructure, Inc.
+#
+# This file is part of Canvas.
+#
+# Canvas is free software: you can redistribute it and/or modify it under
+# the terms of the GNU Affero General Public License as published by the Free
+# Software Foundation, version 3 of the License.
+#
+# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Affero General Public License along
+# with this program. If not, see <http://www.gnu.org/licenses/>.
+
 class Cacher < ActiveRecord::Observer
   observe :user, :account_user
 
diff --git a/app/observers/conditional_release_observer.rb b/app/observers/conditional_release_observer.rb
index 27ec87a06db..146c57ecb4c 100644
--- a/app/observers/conditional_release_observer.rb
+++ b/app/observers/conditional_release_observer.rb
@@ -1,3 +1,20 @@
+#
+# Copyright (C) 2016 - present Instructure, Inc.
+#
+# This file is part of Canvas.
+#
+# Canvas is free software: you can redistribute it and/or modify it under
+# the terms of the GNU Affero General Public License as published by the Free
+# Software Foundation, version 3 of the License.
+#
+# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Affero General Public License along
+# with this program. If not, see <http://www.gnu.org/licenses/>.
+
 class ConditionalReleaseObserver < ActiveRecord::Observer
   observe :submission,
           :assignment
diff --git a/app/observers/live_events_observer.rb b/app/observers/live_events_observer.rb
index 6fa8cb26f75..862cd29cdab 100644
--- a/app/observers/live_events_observer.rb
+++ b/app/observers/live_events_observer.rb
@@ -1,3 +1,20 @@
+#
+# Copyright (C) 2015 - present Instructure, Inc.
+#
+# This file is part of Canvas.
+#
+# Canvas is free software: you can redistribute it and/or modify it under
+# the terms of the GNU Affero General Public License as published by the Free
+# Software Foundation, version 3 of the License.
+#
+# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Affero General Public License along
+# with this program. If not, see <http://www.gnu.org/licenses/>.
+
 class LiveEventsObserver < ActiveRecord::Observer
   observe :content_export,
           :course,
diff --git a/app/observers/stream_item_cache.rb b/app/observers/stream_item_cache.rb
index b686ddcca2d..01cacff604d 100644
--- a/app/observers/stream_item_cache.rb
+++ b/app/observers/stream_item_cache.rb
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2012 Instructure, Inc.
+# Copyright (C) 2012 - present Instructure, Inc.
 #
 # This file is part of Canvas.
 #