diff --git a/Cargo.toml b/Cargo.toml
index 055a488..81bb47b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,3 +1,18 @@
+# This file is part of Deja-vu.
+#
+# Deja-vu 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.
+#
+# Deja-vu 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 Deja-vu. If not, see <https://www.gnu.org/licenses/>.
+
 [package]
 name = "deja-vu"
 version = "0.2.0"
diff --git a/build.rs b/build.rs
index 2461afa..c3ced6b 100644
--- a/build.rs
+++ b/build.rs
@@ -1,3 +1,18 @@
+// This file is part of Deja-vu.
+//
+// Deja-vu 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.
+//
+// Deja-vu 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 Deja-vu. If not, see <https://www.gnu.org/licenses/>.
+//
 use anyhow::Result;
 use vergen_gix::{BuildBuilder, CargoBuilder, Emitter, GixBuilder};
 
diff --git a/src/action.rs b/src/action.rs
index 5c181b8..a8615c9 100644
--- a/src/action.rs
+++ b/src/action.rs
@@ -1,3 +1,18 @@
+// This file is part of Deja-vu.
+//
+// Deja-vu 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.
+//
+// Deja-vu 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 Deja-vu. If not, see <https://www.gnu.org/licenses/>.
+//
 use serde::{Deserialize, Serialize};
 use strum::Display;
 
diff --git a/src/app.rs b/src/app.rs
index e59f456..daf28eb 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -1,3 +1,18 @@
+// This file is part of Deja-vu.
+//
+// Deja-vu 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.
+//
+// Deja-vu 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 Deja-vu. If not, see <https://www.gnu.org/licenses/>.
+//
 use std::{collections::HashMap, iter::zip};
 
 use color_eyre::Result;
diff --git a/src/cli.rs b/src/cli.rs
index 8696a0a..be4d597 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -1,3 +1,18 @@
+// This file is part of Deja-vu.
+//
+// Deja-vu 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.
+//
+// Deja-vu 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 Deja-vu. If not, see <https://www.gnu.org/licenses/>.
+//
 use clap::Parser;
 
 use crate::config::{get_config_dir, get_data_dir};
diff --git a/src/components.rs b/src/components.rs
index a4d2c68..8b90898 100644
--- a/src/components.rs
+++ b/src/components.rs
@@ -1,3 +1,18 @@
+// This file is part of Deja-vu.
+//
+// Deja-vu 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.
+//
+// Deja-vu 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 Deja-vu. If not, see <https://www.gnu.org/licenses/>.
+//
 use color_eyre::Result;
 use crossterm::event::{KeyEvent, MouseEvent};
 use ratatui::{
diff --git a/src/components/footer.rs b/src/components/footer.rs
index 6d52bd9..ff39728 100644
--- a/src/components/footer.rs
+++ b/src/components/footer.rs
@@ -1,3 +1,18 @@
+// This file is part of Deja-vu.
+//
+// Deja-vu 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.
+//
+// Deja-vu 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 Deja-vu. If not, see <https://www.gnu.org/licenses/>.
+//
 use color_eyre::Result;
 use ratatui::{prelude::*, widgets::*};
 use tokio::sync::mpsc::UnboundedSender;
diff --git a/src/components/fps.rs b/src/components/fps.rs
index 3323dd2..cdb822e 100644
--- a/src/components/fps.rs
+++ b/src/components/fps.rs
@@ -1,3 +1,18 @@
+// This file is part of Deja-vu.
+//
+// Deja-vu 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.
+//
+// Deja-vu 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 Deja-vu. If not, see <https://www.gnu.org/licenses/>.
+//
 use std::time::Instant;
 
 use color_eyre::Result;
diff --git a/src/components/left.rs b/src/components/left.rs
index e32b78a..589cb1e 100644
--- a/src/components/left.rs
+++ b/src/components/left.rs
@@ -1,3 +1,18 @@
+// This file is part of Deja-vu.
+//
+// Deja-vu 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.
+//
+// Deja-vu 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 Deja-vu. If not, see <https://www.gnu.org/licenses/>.
+//
 use color_eyre::Result;
 use crossterm::event::KeyEvent;
 use ratatui::{prelude::*, widgets::*};
diff --git a/src/components/popup.rs b/src/components/popup.rs
index a0fc22a..06a14f2 100644
--- a/src/components/popup.rs
+++ b/src/components/popup.rs
@@ -1,3 +1,18 @@
+// This file is part of Deja-vu.
+//
+// Deja-vu 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.
+//
+// Deja-vu 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 Deja-vu. If not, see <https://www.gnu.org/licenses/>.
+//
 use color_eyre::Result;
 use ratatui::{prelude::*, widgets::*};
 use tokio::sync::mpsc::UnboundedSender;
diff --git a/src/components/right.rs b/src/components/right.rs
index 92cc2d7..4567e38 100644
--- a/src/components/right.rs
+++ b/src/components/right.rs
@@ -1,3 +1,18 @@
+// This file is part of Deja-vu.
+//
+// Deja-vu 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.
+//
+// Deja-vu 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 Deja-vu. If not, see <https://www.gnu.org/licenses/>.
+//
 use color_eyre::Result;
 use crossterm::event::KeyEvent;
 use ratatui::{prelude::*, widgets::*};
diff --git a/src/components/state.rs b/src/components/state.rs
new file mode 100644
index 0000000..ffbe662
--- /dev/null
+++ b/src/components/state.rs
@@ -0,0 +1,15 @@
+// This file is part of Deja-vu.
+//
+// Deja-vu 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.
+//
+// Deja-vu 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 Deja-vu. If not, see <https://www.gnu.org/licenses/>.
+//
diff --git a/src/components/title.rs b/src/components/title.rs
index 3f71568..8855808 100644
--- a/src/components/title.rs
+++ b/src/components/title.rs
@@ -1,3 +1,18 @@
+// This file is part of Deja-vu.
+//
+// Deja-vu 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.
+//
+// Deja-vu 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 Deja-vu. If not, see <https://www.gnu.org/licenses/>.
+//
 use color_eyre::Result;
 use ratatui::{prelude::*, widgets::*};
 use tokio::sync::mpsc::UnboundedSender;
diff --git a/src/config.rs b/src/config.rs
index 09b3d2c..0099158 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -1,3 +1,18 @@
+// This file is part of Deja-vu.
+//
+// Deja-vu 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.
+//
+// Deja-vu 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 Deja-vu. If not, see <https://www.gnu.org/licenses/>.
+//
 #![allow(dead_code)] // Remove this once you start using the code
 
 use std::{collections::HashMap, env, path::PathBuf};
diff --git a/src/errors.rs b/src/errors.rs
index c9dfbfd..6d1753f 100644
--- a/src/errors.rs
+++ b/src/errors.rs
@@ -1,3 +1,18 @@
+// This file is part of Deja-vu.
+//
+// Deja-vu 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.
+//
+// Deja-vu 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 Deja-vu. If not, see <https://www.gnu.org/licenses/>.
+//
 use std::env;
 
 use color_eyre::Result;
diff --git a/src/logging.rs b/src/logging.rs
index 37df144..2494013 100644
--- a/src/logging.rs
+++ b/src/logging.rs
@@ -1,3 +1,18 @@
+// This file is part of Deja-vu.
+//
+// Deja-vu 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.
+//
+// Deja-vu 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 Deja-vu. If not, see <https://www.gnu.org/licenses/>.
+//
 use color_eyre::Result;
 use tracing_error::ErrorLayer;
 use tracing_subscriber::{fmt, prelude::*, EnvFilter};
diff --git a/src/main.rs b/src/main.rs
index 7f3f78b..4024bec 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,18 @@
+// This file is part of Deja-vu.
+//
+// Deja-vu 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.
+//
+// Deja-vu 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 Deja-vu. If not, see <https://www.gnu.org/licenses/>.
+//
 use clap::Parser;
 use cli::Cli;
 use color_eyre::Result;
diff --git a/src/tui.rs b/src/tui.rs
index 9796e8d..9bc93c7 100644
--- a/src/tui.rs
+++ b/src/tui.rs
@@ -1,3 +1,18 @@
+// This file is part of Deja-vu.
+//
+// Deja-vu 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.
+//
+// Deja-vu 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 Deja-vu. If not, see <https://www.gnu.org/licenses/>.
+//
 #![allow(dead_code)] // Remove this once you start using the code
 
 use std::{