diff --git a/09/src/main.zig b/09/src/main.zig
index 9b4a670..f8bf3c3 100644
--- a/09/src/main.zig
+++ b/09/src/main.zig
@@ -14,4 +14,9 @@ pub fn main() anyerror!void {
     try machine.run();
 
     std.debug.warn("Day 9, Part 1: {}\n", try machine.readFromOutput());
+
+    try machine.writeToInput(2); // BOOST program in sensor boost mode
+    try machine.run();
+
+    std.debug.warn("Day 9, Part 2: {}\n", try machine.readFromOutput());
 }