diff --git a/build.rs b/build.rs
new file mode 100644
index 0000000..b07ed3a
--- /dev/null
+++ b/build.rs
@@ -0,0 +1,10 @@
+use std::process::Command;
+
+fn main() {
+    Command::new("python3")
+    		.arg("migen/fpga_config.py")
+    		.spawn()
+    		.expect("FPGA bitstream file cannot be built!");
+
+    println!("cargo:rerun-if-changed=migen/fpga_config.py")
+}