diff --git a/Cargo.toml b/Cargo.toml
index 7312236..03cc6ae 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,3 +7,4 @@ description = "Fast functions for printing integer primitives to an io::Write"
 repository = "https://github.com/dtolnay/itoa"
 documentation = "https://github.com/dtolnay/itoa"
 categories = ["value-formatting"]
+exclude = ["performance.png"]