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-rw-r--r--compiler/rustc_mir_transform/Cargo.toml2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_mir_transform/Cargo.toml b/compiler/rustc_mir_transform/Cargo.toml
index 5e1a587b0ec..bde4e215a2a 100644
--- a/compiler/rustc_mir_transform/Cargo.toml
+++ b/compiler/rustc_mir_transform/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "rustc_mir_transform"
 version = "0.0.0"
-edition = "2018"
+edition = "2021"
 
 [lib]
 doctest = false