diff --git a/README.md b/README.md
index a09752e..a2e347b 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,8 @@
 # gui_slop
 
-gui input to serial
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+gui input to serial
+
+## build
+```sh
+zig build-exe main.zig -lc -lSDL2
+```
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