diff --git a/Cargo.lock b/Cargo.lock
index 28e26ef..e0498e6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -177,6 +177,10 @@ version = "0.1.0"
 [[package]]
 name = "example1"
 version = "0.1.0"
+dependencies = [
+ "serde",
+ "serde_json",
+]
 
 [[package]]
 name = "expression"
@@ -901,11 +905,12 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.120"
+version = "1.0.127"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4e0d21c9a8cae1235ad58a00c11cb40d4b1e5c784f1ef2c537876ed6ffd8b7c5"
+checksum = "8043c06d9f82bd7271361ed64f415fe5e12a77fdb52e573e7f06a516dea329ad"
 dependencies = [
  "itoa",
+ "memchr",
  "ryu",
  "serde",
 ]
diff --git a/chapter11/example1/Cargo.toml b/chapter11/example1/Cargo.toml
index e21e1c5..728978b 100644
--- a/chapter11/example1/Cargo.toml
+++ b/chapter11/example1/Cargo.toml
@@ -8,4 +8,4 @@ edition = "2021"
 [dependencies]
 
 serde = "1.0.0"
-serde_json = "1.0.0"
+serde_json = "1.0.127"