diff --git a/utils/resb/Cargo.toml b/utils/resb/Cargo.toml
index fecdd15f662..b5277a3dc05 100644
--- a/utils/resb/Cargo.toml
+++ b/utils/resb/Cargo.toml
@@ -47,3 +47,5 @@ required-features = ["serialize", "text"]
 
 [[example]]
 name = "time_zone_rule"
+# run in `cargo test`
+harness = false