diff --git a/notmuch/Cargo.toml b/notmuch/Cargo.toml
index 72edca7..d97cf00 100644
--- a/notmuch/Cargo.toml
+++ b/notmuch/Cargo.toml
@@ -2,7 +2,7 @@
 name = "notmuch"
 version = "0.0.144"
 edition = "2021"
-
+exclude = ["/testdata"]
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]