diff --git a/classes/connections/connections.gd b/classes/connections/connections.gd
index 3d9dc36..ddf7b18 100644
--- a/classes/connections/connections.gd
+++ b/classes/connections/connections.gd
@@ -1,3 +1,6 @@
+# (c) 2023-present Eroax
+# (c) 2023-present Yagich
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 class_name Connections
 
 static var obs_websocket
diff --git a/classes/deck/deck.gd b/classes/deck/deck.gd
index b53b564..7d0e320 100644
--- a/classes/deck/deck.gd
+++ b/classes/deck/deck.gd
@@ -1,3 +1,6 @@
+# (c) 2023-present Eroax
+# (c) 2023-present Yagich
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 class_name Deck
 ## A deck/graph with nodes.
 ##
diff --git a/classes/deck/deck_holder.gd b/classes/deck/deck_holder.gd
index 13c7371..1e2e2bc 100644
--- a/classes/deck/deck_holder.gd
+++ b/classes/deck/deck_holder.gd
@@ -1,3 +1,6 @@
+# (c) 2023-present Eroax
+# (c) 2023-present Yagich
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 class_name DeckHolder
 ## @experimental
 ## A static class holding references to all decks opened in the current session.
diff --git a/classes/deck/deck_node.gd b/classes/deck/deck_node.gd
index 76d745e..3c39a07 100644
--- a/classes/deck/deck_node.gd
+++ b/classes/deck/deck_node.gd
@@ -1,3 +1,6 @@
+# (c) 2023-present Eroax
+# (c) 2023-present Yagich
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 class_name DeckNode
 ## A node in a [Deck].
 ##
diff --git a/classes/deck/logger.gd b/classes/deck/logger.gd
index 5359237..f71a287 100644
--- a/classes/deck/logger.gd
+++ b/classes/deck/logger.gd
@@ -1,3 +1,6 @@
+# (c) 2023-present Eroax
+# (c) 2023-present Yagich
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 class_name Logger
 
 enum LogType {
diff --git a/classes/deck/node_db.gd b/classes/deck/node_db.gd
index 3bf8e50..7ca92e0 100644
--- a/classes/deck/node_db.gd
+++ b/classes/deck/node_db.gd
@@ -1,3 +1,6 @@
+# (c) 2023-present Eroax
+# (c) 2023-present Yagich
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 extends Node
 class_name NodeDB_
 
diff --git a/classes/deck/port.gd b/classes/deck/port.gd
index 4387780..110fcbc 100644
--- a/classes/deck/port.gd
+++ b/classes/deck/port.gd
@@ -1,3 +1,6 @@
+# (c) 2023-present Eroax
+# (c) 2023-present Yagich
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 class_name Port
 ## A data type representing a port of a [DeckNode].
 ##
diff --git a/classes/deck/renderer_persistence.gd b/classes/deck/renderer_persistence.gd
index 823b284..1b9ca97 100644
--- a/classes/deck/renderer_persistence.gd
+++ b/classes/deck/renderer_persistence.gd
@@ -1,3 +1,6 @@
+# (c) 2023-present Eroax
+# (c) 2023-present Yagich
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 class_name RendererPersistence
 ## An interface for per-renderer persistent data.
 ##
diff --git a/classes/deck/search_provider.gd b/classes/deck/search_provider.gd
index 9435ab6..b207758 100644
--- a/classes/deck/search_provider.gd
+++ b/classes/deck/search_provider.gd
@@ -1,3 +1,6 @@
+# (c) 2023-present Eroax
+# (c) 2023-present Yagich
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 class_name SearchProvider
 
 ## A class facilitating the searching of nodes.
diff --git a/classes/types/deck_type.gd b/classes/types/deck_type.gd
index 0772628..a26523e 100644
--- a/classes/types/deck_type.gd
+++ b/classes/types/deck_type.gd
@@ -1,3 +1,6 @@
+# (c) 2023-present Eroax
+# (c) 2023-present Yagich
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 class_name DeckType
 
 enum Types{
diff --git a/script_templates/DeckNode/node_template.gd b/script_templates/DeckNode/node_template.gd
index 8346316..27840d7 100644
--- a/script_templates/DeckNode/node_template.gd
+++ b/script_templates/DeckNode/node_template.gd
@@ -1,3 +1,6 @@
+# (c) 2023-present Eroax
+# (c) 2023-present Yagich
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 extends DeckNode