diff --git a/Cargo.lock b/Cargo.lock
index 5495a2bef..84a4a28ae 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3382,9 +3382,9 @@ checksum = "9106e1d747ffd48e6be5bb2d97fa706ed25b144fbee4d5c02eae110cd8d6badd"
 
 [[package]]
 name = "mail-builder"
-version = "0.4.2"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5666db60ccc742381c715c8daf303e60d266f1d1c8b123ab3fe78b590edaf564"
+checksum = "0926cff74776d4af100a95c90a6649486659526ce638bee6648ecc9c41051810"
 
 [[package]]
 name = "mailparse"
diff --git a/Cargo.toml b/Cargo.toml
index 95c7e4225..9cc6dc4da 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -66,7 +66,7 @@ iroh-gossip = { version = "0.35", default-features = false, features = ["net"] }
 iroh = { version = "0.35", default-features = false }
 kamadak-exif = "0.6.1"
 libc = { workspace = true }
-mail-builder = { version = "0.4.2", default-features = false }
+mail-builder = { version = "0.4.3", default-features = false }
 mailparse = { workspace = true }
 mime = "0.3.17"
 num_cpus = "1.17"