diff --git a/build.rs b/build.rs
index 0d07cc6..9e7f728 100644
--- a/build.rs
+++ b/build.rs
@@ -14,7 +14,7 @@ const MERMAID_SCRIPT_URL_TEMPLATE: &str =
 fn main() {
     println!("cargo:rerun-if-changed=build.rs");
     println!("cargo:rerun-if-changed=assets/");
-    println!("cargo:rerun-if-env-changed=RANDOM");
+    println!("cargo:rerun-if-env-changed=FORCE_DEPS_DOWNLOAD");
 
     println!("cargo:rerun-if-changed=templates/");
     minify_template_file("templates/base.html", "templates/base.min.html").unwrap();