diff --git a/lsp/src/discord.rs b/lsp/src/discord.rs
index 148b559..6f8719f 100644
--- a/lsp/src/discord.rs
+++ b/lsp/src/discord.rs
@@ -1,3 +1,22 @@
+/*
+ * This file is part of discord-presence. Extension for Zed that adds support for Discord Rich Presence using LSP.
+ *
+ * Copyright (c) 2024 Steinhübl
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ */
+
 use std::{
     sync::{Mutex, MutexGuard},
     time::{Duration, SystemTime, UNIX_EPOCH},
diff --git a/lsp/src/git.rs b/lsp/src/git.rs
index c880f20..eeddb67 100644
--- a/lsp/src/git.rs
+++ b/lsp/src/git.rs
@@ -1,3 +1,22 @@
+/*
+ * This file is part of discord-presence. Extension for Zed that adds support for Discord Rich Presence using LSP.
+ *
+ * Copyright (c) 2024 Steinhübl
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ */
+
 use git2::Repository;
 
 fn get_repository(path: &str) -> Option<Repository> {
diff --git a/lsp/src/main.rs b/lsp/src/main.rs
index 9af9d5c..4984874 100644
--- a/lsp/src/main.rs
+++ b/lsp/src/main.rs
@@ -1,3 +1,22 @@
+/*
+ * This file is part of discord-presence. Extension for Zed that adds support for Discord Rich Presence using LSP.
+ *
+ * Copyright (c) 2024 Steinhübl
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ */
+
 use std::fmt::Debug;
 use std::path::{Path, PathBuf};
 use std::sync::{Mutex, MutexGuard};
diff --git a/src/discord_presence.rs b/src/discord_presence.rs
index 7e400bf..e148ab5 100644
--- a/src/discord_presence.rs
+++ b/src/discord_presence.rs
@@ -1,3 +1,22 @@
+/*
+ * This file is part of discord-presence. Extension for Zed that adds support for Discord Rich Presence using LSP.
+ *
+ * Copyright (c) 2024 Steinhübl
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ */
+
 use std::fs;
 use zed_extension_api::{self as zed};