chore: add a rust-version field to Cargo.toml

Sponsored-by: author

1 files changed, 1 insertions, 3 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 53682a6..d7959b4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,9 +9,7 @@ authors = [
 license = "MIT-0"
 description = '''render diagram markup in a Pandoc abstract syntax tree as SVG'''
 repository = "https://gitlab.com/larswirzenius/pandoc-filter-diagram"
-
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+rust-version = "1.56.0"
 
 [dependencies]
 anyhow = "1.0.50"