diff --git a/Cargo.toml b/Cargo.toml
index e921a1f..07a861f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,6 +2,8 @@
 name = "polyscribe"
 version = "0.1.0"
 edition = "2024"
+license = "MIT"
+license-file = "LICENSE"
 
 [features]
 # Default: CPU only; no GPU features enabled
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..dfbf153
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2025 <vikingowl>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
index fb8def6..b462308 100644
--- a/README.md
+++ b/README.md
@@ -75,3 +75,8 @@ See the examples/ directory for copy-paste scripts:
 - examples/transcribe_file.sh
 - examples/update_models.sh
 - examples/download_models_interactive.sh
+
+License
+-------
+
+This project is licensed under the MIT License — see the LICENSE file for details.
diff --git a/build.rs b/build.rs
index 539dcf2..cce4c63 100644
--- a/build.rs
+++ b/build.rs
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2025 <COPYRIGHT HOLDER>. All rights reserved.
+
 fn main() {
     // Only run special build steps when gpu-vulkan feature is enabled.
     let vulkan_enabled = std::env::var("CARGO_FEATURE_GPU_VULKAN").is_ok();
diff --git a/examples/download_models_interactive.sh b/examples/download_models_interactive.sh
index 42f9145..ecff86a 100644
--- a/examples/download_models_interactive.sh
+++ b/examples/download_models_interactive.sh
@@ -1,4 +1,6 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: MIT
+# Copyright (c) 2025 <COPYRIGHT HOLDER>. All rights reserved.
 set -euo pipefail
 
 # Launch the interactive model downloader and select models to install
diff --git a/examples/transcribe_file.sh b/examples/transcribe_file.sh
index 844daf6..280b48f 100644
--- a/examples/transcribe_file.sh
+++ b/examples/transcribe_file.sh
@@ -1,4 +1,6 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: MIT
+# Copyright (c) 2025 <COPYRIGHT HOLDER>. All rights reserved.
 set -euo pipefail
 
 # Transcribe an audio/video file to JSON and SRT into ./output
diff --git a/examples/update_models.sh b/examples/update_models.sh
index 9b8de0a..b04ce59 100644
--- a/examples/update_models.sh
+++ b/examples/update_models.sh
@@ -1,4 +1,6 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: MIT
+# Copyright (c) 2025 <COPYRIGHT HOLDER>. All rights reserved.
 set -euo pipefail
 
 # Verify/update local models non-interactively (useful in CI)
diff --git a/src/backend.rs b/src/backend.rs
index 778fb2b..ee0db74 100644
--- a/src/backend.rs
+++ b/src/backend.rs
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2025 <COPYRIGHT HOLDER>. All rights reserved.
+
 //! Transcription backend selection and implementations (CPU/GPU) used by PolyScribe.
 use crate::OutputEntry;
 use crate::{decode_audio_to_pcm_f32_ffmpeg, find_model_file};
diff --git a/src/lib.rs b/src/lib.rs
index d8cfeb9..b82bcf8 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2025 <COPYRIGHT HOLDER>. All rights reserved.
+
 #![forbid(elided_lifetimes_in_paths)]
 #![forbid(unused_must_use)]
 #![deny(missing_docs)]
diff --git a/src/main.rs b/src/main.rs
index cb5e62f..4ea02d1 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2025 <COPYRIGHT HOLDER>. All rights reserved.
+
 use std::fs::{File, create_dir_all};
 use std::io::{self, Read, Write};
 use std::path::{Path, PathBuf};
diff --git a/src/models.rs b/src/models.rs
index 54379cf..9ba98c5 100644
--- a/src/models.rs
+++ b/src/models.rs
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2025 <COPYRIGHT HOLDER>. All rights reserved.
+
 //! Model discovery, selection, and downloading logic for PolyScribe.
 use std::collections::BTreeMap;
 use std::env;
diff --git a/tests/integration_aux.rs b/tests/integration_aux.rs
index 3cb1706..27747a6 100644
--- a/tests/integration_aux.rs
+++ b/tests/integration_aux.rs
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2025 <COPYRIGHT HOLDER>. All rights reserved.
+
 use std::process::Command;
 
 fn bin() -> &'static str {
diff --git a/tests/integration_cli.rs b/tests/integration_cli.rs
index 2d96d99..17e2d8f 100644
--- a/tests/integration_cli.rs
+++ b/tests/integration_cli.rs
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2025 <COPYRIGHT HOLDER>. All rights reserved.
+
 use std::fs;
 use std::io::Read;
 use std::path::{Path, PathBuf};