diff --git a/tools/codegen/src/main.rs b/tools/codegen/src/main.rs
index 5790eb45..388d48ba 100644
--- a/tools/codegen/src/main.rs
+++ b/tools/codegen/src/main.rs
@@ -402,17 +402,19 @@ fn download(url: &str) -> Result<ureq::Response> {
             Ok(res) => return Ok(res),
             Err(e) => last_error = Some(e),
         }
-        if token1.is_some() {
-            token1 = None;
-        } else if token2.is_some() {
-            token2 = None;
+        if retry == 3 || retry == 6 {
+            if token1.is_some() {
+                token1 = None;
+            } else if token2.is_some() {
+                token2 = None;
+            }
         }
         retry += 1;
         if retry > 10 {
             break;
         }
         eprintln!("download failed; retrying ({retry}/10)");
-        std::thread::sleep(Duration::from_secs(retry * 4));
+        std::thread::sleep(Duration::from_secs(retry * 2));
     }
     Err(last_error.unwrap().into())
 }