diff --git a/README.md b/README.md
index 8e1db70..ed77c27 100644
--- a/README.md
+++ b/README.md
@@ -25,4 +25,4 @@ You should use a number of threads equal to the number of CPU cores. The `--init
 ![scene 2](assets/screenshot_3.png)
 
 # License
-The ray tracer itself (main.c and camera.c) are MIT licensed. Everything else (other than 3p code) is released in the public domain.
\ No newline at end of file
+The ray tracer itself (main.c, camera.c, and shaders) are MIT licensed. Everything else (other than 3p code) is released in the public domain.
\ No newline at end of file
diff --git a/assets/screen.fs b/assets/screen.fs
index 183e2dd..9484ad4 100644
--- a/assets/screen.fs
+++ b/assets/screen.fs
@@ -1,3 +1,21 @@
+/*
+Copyright 2024 Francesco Cozzuto
+
+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.
+*/
 #version 330 core
 out vec4 FragColor;
 
diff --git a/assets/screen.vs b/assets/screen.vs
index 3f3feb6..7aa8811 100644
--- a/assets/screen.vs
+++ b/assets/screen.vs
@@ -1,3 +1,21 @@
+/*
+Copyright 2024 Francesco Cozzuto
+
+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.
+*/
 #version 330 core
 layout (location = 0) in vec2 aPos;
 layout (location = 1) in vec2 aTexCoord;