diff --git a/src/ciphertext_types.rs b/src/ciphertext_types.rs
index 2b131d5..7cbe892 100644
--- a/src/ciphertext_types.rs
+++ b/src/ciphertext_types.rs
@@ -1,3 +1,8 @@
+// BSD 3-Clause Clear License
+//
+// Copyright © 2023 ZAMA.
+// All rights reserved.
+
 use std::collections::HashMap;
 
 use tfhe::{
diff --git a/src/gen_keys.rs b/src/gen_keys.rs
index e9fd760..abc258e 100644
--- a/src/gen_keys.rs
+++ b/src/gen_keys.rs
@@ -1,3 +1,8 @@
+// BSD 3-Clause Clear License
+//
+// Copyright © 2023 ZAMA.
+// All rights reserved.
+
 use tfhe::{
     generate_keys, shortint::parameters::PARAM_SMALL_MESSAGE_2_CARRY_2_COMPACT_PK, ClientKey,
     CompactPublicKey, ConfigBuilder, ServerKey,
diff --git a/src/lib.rs b/src/lib.rs
index 7d03227..705d6b1 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,2 +1,7 @@
+// BSD 3-Clause Clear License
+//
+// Copyright © 2023 ZAMA.
+// All rights reserved.
+
 pub mod ciphertext_types;
 pub mod gen_keys;
diff --git a/src/main.rs b/src/main.rs
index 10f134f..0d4934f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,8 @@
+// BSD 3-Clause Clear License
+//
+// Copyright © 2023 ZAMA.
+// All rights reserved.
+
 use std::{fs::File, io::Read};
 
 use clap::{Parser, Subcommand};