diff --git a/.gitignore b/.gitignore
index f2e972d..fd634d0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,5 +2,8 @@
 # will have compiled files and executables
 /target/
 
+# https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
+Cargo.lock
+
 # These are backup files generated by rustfmt
 **/*.rs.bk