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-rw-r--r--src/doc/rustc-dev-guide/ci/date-check/Cargo.toml2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/doc/rustc-dev-guide/ci/date-check/Cargo.toml b/src/doc/rustc-dev-guide/ci/date-check/Cargo.toml
index 95251fb1233..884f485fad5 100644
--- a/src/doc/rustc-dev-guide/ci/date-check/Cargo.toml
+++ b/src/doc/rustc-dev-guide/ci/date-check/Cargo.toml
@@ -2,7 +2,7 @@
 name = "date-check"
 version = "0.1.0"
 authors = ["Camelid <camelidcamel@gmail.com>"]
-edition = "2018"
+edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html