diff --git a/rust-in-action/ch07/serde-eg/Cargo.lock b/rust-in-action/ch07/serde-eg/Cargo.lock
index 5e3ac8f..6836f3e 100644
--- a/rust-in-action/ch07/serde-eg/Cargo.lock
+++ b/rust-in-action/ch07/serde-eg/Cargo.lock
@@ -1,115 +1,122 @@
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diff --git a/rust-in-action/ch07/serde-eg/Cargo.toml b/rust-in-action/ch07/serde-eg/Cargo.toml
index 14eb1db..eb331b3 100644
--- a/rust-in-action/ch07/serde-eg/Cargo.toml
+++ b/rust-in-action/ch07/serde-eg/Cargo.toml
@@ -9,6 +9,6 @@ edition = "2018"
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 serde_json = "1"