diff --git a/tarpc/Cargo.toml b/tarpc/Cargo.toml
index 440b033..2964807 100644
--- a/tarpc/Cargo.toml
+++ b/tarpc/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "tarpc"
 version = "0.27.2"
-rust-version = "1.56"
+rust-version = "1.58.0"
 authors = [
     "Adam Wright <adam.austin.wright@gmail.com>",
     "Tim Kuehn <timothy.j.kuehn@gmail.com>",