diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ca39541..6e3706d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,3 +1,19 @@
+# A safe, Rust-native binding for the SWORD library
+# Copyright (C) 2025 Gregory Hellings
+#
+# 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; version 2.
+#
+# 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, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
 stages:
   - check
   - build
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..c6711e1
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,13 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to
diff --git a/build.rs b/build.rs
index bec23dc..41d42c7 100644
--- a/build.rs
+++ b/build.rs
@@ -1,3 +1,21 @@
+/*
+ * A safe, Rust-native binding for the SWORD library
+ * Copyright (C) 2025 Gregory Hellings
+ *
+ * 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; version 2.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
 use system_deps;
 
 fn main() {
diff --git a/flake.nix b/flake.nix
index d80c7be..7ead4d4 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,4 +1,18 @@
-# github.com/brianmcgee has lots of great ideas for going above and beyond for this
+# A safe, Rust-native binding for the SWORD library
+# Copyright (C) 2025 Gregory Hellings
+#
+# 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; version 2.
+#
+# 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, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 {
   description = "Greg's homepage";
   inputs = {
diff --git a/src/cxx/mgr.cc b/src/cxx/mgr.cc
index 9181ffc..8c194b3 100644
--- a/src/cxx/mgr.cc
+++ b/src/cxx/mgr.cc
@@ -1,3 +1,21 @@
+/*
+ * A safe, Rust-native binding for the SWORD library
+ * Copyright (C) 2025 Gregory Hellings
+ *
+ * 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; version 2.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
 #include "mgr.h"
 #include <sword/markupfiltmgr.h>
 
diff --git a/src/cxx/mgr.h b/src/cxx/mgr.h
index 68361eb..0ab56e7 100644
--- a/src/cxx/mgr.h
+++ b/src/cxx/mgr.h
@@ -1,3 +1,21 @@
+/*
+ * A safe, Rust-native binding for the SWORD library
+ * Copyright (C) 2025 Gregory Hellings
+ *
+ * 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; version 2.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
 #pragma once
 
 #include <memory>
diff --git a/src/cxx/mod.rs b/src/cxx/mod.rs
index 95c622b..3a2c16d 100644
--- a/src/cxx/mod.rs
+++ b/src/cxx/mod.rs
@@ -1,3 +1,21 @@
+/*
+ * A safe, Rust-native binding for the SWORD library
+ * Copyright (C) 2025 Gregory Hellings
+ *
+ * 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; version 2.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
 #[cxx::bridge(namespace = "sword_rs")]
 pub mod ffi {
     unsafe extern "C++" {
diff --git a/src/cxx/module.cc b/src/cxx/module.cc
index 1cf14e9..eac1d5a 100644
--- a/src/cxx/module.cc
+++ b/src/cxx/module.cc
@@ -1,3 +1,21 @@
+/*
+ * A safe, Rust-native binding for the SWORD library
+ * Copyright (C) 2025 Gregory Hellings
+ *
+ * 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; version 2.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
 #include "module.h"
 
 namespace sword_rs {
diff --git a/src/cxx/module.h b/src/cxx/module.h
index e0eda35..815f41b 100644
--- a/src/cxx/module.h
+++ b/src/cxx/module.h
@@ -1,3 +1,21 @@
+/*
+ * A safe, Rust-native binding for the SWORD library
+ * Copyright (C) 2025 Gregory Hellings
+ *
+ * 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; version 2.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
 #pragma once
 
 #include <memory>
diff --git a/src/cxx/versekey.cc b/src/cxx/versekey.cc
index b2a25b1..1e75631 100644
--- a/src/cxx/versekey.cc
+++ b/src/cxx/versekey.cc
@@ -1,3 +1,21 @@
+/*
+ * A safe, Rust-native binding for the SWORD library
+ * Copyright (C) 2025 Gregory Hellings
+ *
+ * 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; version 2.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
 #include "versekey.h"
 #include <sword/versekey.h>
 
diff --git a/src/cxx/versekey.h b/src/cxx/versekey.h
index 04491ca..0ee45f4 100644
--- a/src/cxx/versekey.h
+++ b/src/cxx/versekey.h
@@ -1,3 +1,21 @@
+/*
+ * A safe, Rust-native binding for the SWORD library
+ * Copyright (C) 2025 Gregory Hellings
+ *
+ * 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; version 2.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
 #pragma once
 
 #include <memory>
diff --git a/src/cxx/versification.cc b/src/cxx/versification.cc
index 35202e1..92cc36c 100644
--- a/src/cxx/versification.cc
+++ b/src/cxx/versification.cc
@@ -1,3 +1,21 @@
+/*
+ * A safe, Rust-native binding for the SWORD library
+ * Copyright (C) 2025 Gregory Hellings
+ *
+ * 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; version 2.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
 #include "versification.h"
 #include "rust/cxx.h"
 
diff --git a/src/cxx/versification.h b/src/cxx/versification.h
index bc11b16..6625021 100644
--- a/src/cxx/versification.h
+++ b/src/cxx/versification.h
@@ -1,3 +1,21 @@
+/*
+ * A safe, Rust-native binding for the SWORD library
+ * Copyright (C) 2025 Gregory Hellings
+ *
+ * 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; version 2.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
 #pragma once
 
 #include <sword/versificationmgr.h>
diff --git a/src/lib.rs b/src/lib.rs
index 587ce8f..cfcce48 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,3 +1,21 @@
+/*
+ * A safe, Rust-native binding for the SWORD library
+ * Copyright (C) 2025 Gregory Hellings
+ *
+ * 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; version 2.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
 mod cxx;
 pub mod mgr;
 pub mod module;
diff --git a/src/main.rs b/src/main.rs
index 9ec79b2..3740e1b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,21 @@
+/*
+ * A safe, Rust-native binding for the SWORD library
+ * Copyright (C) 2025 Gregory Hellings
+ *
+ * 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; version 2.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
 use rand::Rng;
 use sword_rs::mgr::{Format, Mgr};
 
diff --git a/src/mgr.rs b/src/mgr.rs
index 656ccd9..2c277c5 100644
--- a/src/mgr.rs
+++ b/src/mgr.rs
@@ -1,3 +1,21 @@
+/*
+ * A safe, Rust-native binding for the SWORD library
+ * Copyright (C) 2025 Gregory Hellings
+ *
+ * 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; version 2.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
 use crate::cxx::ffi;
 use crate::module::Module;
 use cxx::UniquePtr;
diff --git a/src/module.rs b/src/module.rs
index 3da9397..21f8f67 100644
--- a/src/module.rs
+++ b/src/module.rs
@@ -1,3 +1,21 @@
+/*
+ * A safe, Rust-native binding for the SWORD library
+ * Copyright (C) 2025 Gregory Hellings
+ *
+ * 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; version 2.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
 use crate::cxx::ffi;
 use cxx::UniquePtr;
 
diff --git a/src/versekey.rs b/src/versekey.rs
index 1b3be99..245b315 100644
--- a/src/versekey.rs
+++ b/src/versekey.rs
@@ -1,3 +1,21 @@
+/*
+ * A safe, Rust-native binding for the SWORD library
+ * Copyright (C) 2025 Gregory Hellings
+ *
+ * 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; version 2.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
 use crate::cxx::ffi;
 use std::fmt;
 
diff --git a/src/versification.rs b/src/versification.rs
index cc83b32..7b63f85 100644
--- a/src/versification.rs
+++ b/src/versification.rs
@@ -1,3 +1,21 @@
+/*
+ * A safe, Rust-native binding for the SWORD library
+ * Copyright (C) 2025 Gregory Hellings
+ *
+ * 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; version 2.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
 /// Rust-friendly wrapper for the CXX versification bridge.
 use crate::cxx::ffi;
 use cxx::UniquePtr;