diff --git a/libsais64-rs/src/build.rs b/libsais64-rs/src/build.rs
new file mode 100644
index 0000000..5b4f12c
--- /dev/null
+++ b/libsais64-rs/src/build.rs
@@ -0,0 +1,11 @@
+fn main() {
+    std::process::Command::new("git")
+        .args([
+            "submodule",
+            "update",
+            "--init",
+            "--recursive"
+        ])
+        .output()
+        .expect("Failed to fetch git submodules!");
+}