diff --git a/vhs/shaders/vhs_mpalko/vhs_mpalko_pass0.slang b/vhs/shaders/vhs_mpalko/vhs_mpalko_pass0.slang
index 87d02c0..14fe999 100644
--- a/vhs/shaders/vhs_mpalko/vhs_mpalko_pass0.slang
+++ b/vhs/shaders/vhs_mpalko/vhs_mpalko_pass0.slang
@@ -1,5 +1,8 @@
 #version 450
 
+// based on VHS Compression
+// shadertoy by mpalko https://www.shadertoy.com/view/tsfXWj
+
 layout(push_constant) uniform Push
 {
 	vec4 SourceSize;
diff --git a/vhs/shaders/vhs_mpalko/vhs_mpalko_pass1.slang b/vhs/shaders/vhs_mpalko/vhs_mpalko_pass1.slang
index 3469eb9..46a8584 100644
--- a/vhs/shaders/vhs_mpalko/vhs_mpalko_pass1.slang
+++ b/vhs/shaders/vhs_mpalko/vhs_mpalko_pass1.slang
@@ -1,5 +1,8 @@
 #version 450
 
+// based on VHS Compression
+// shadertoy by mpalko https://www.shadertoy.com/view/tsfXWj
+
 layout(push_constant) uniform Push
 {
 	vec4 SourceSize;