diff --git a/src/bootstrap/src/core/build_steps/clippy.rs b/src/bootstrap/src/core/build_steps/clippy.rs
index 299eddd52a8c..22d4049480b5 100644
--- a/src/bootstrap/src/core/build_steps/clippy.rs
+++ b/src/bootstrap/src/core/build_steps/clippy.rs
@@ -393,6 +393,7 @@ impl Step for CI {
                 "clippy::non_minimal_cfg".into(),
                 "clippy::print_literal".into(),
                 "clippy::same_item_push".into(),
+                "clippy::single_char_add_str".into(),
             ],
             forbid: vec![],
         };
@@ -410,6 +411,7 @@ impl Step for CI {
                 "clippy::non_minimal_cfg".into(),
                 "clippy::print_literal".into(),
                 "clippy::same_item_push".into(),
+                "clippy::single_char_add_str".into(),
             ],
             forbid: vec![],
         };