diff --git a/Cargo.lock b/Cargo.lock
index 4254025b1f..8520948d7f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1218,9 +1218,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.64"
+version = "1.0.66"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "799e97dc9fdae36a5c8b8f2cae9ce2ee9fdce2058c57a93e6099d919fd982f79"
+checksum = "336b10da19a12ad094b59d870ebde26a45402e5b470add4b5fd03c5048a32127"
 dependencies = [
  "itoa",
  "ryu",
diff --git a/boa/Cargo.toml b/boa/Cargo.toml
index 63b2af7381..166358ca39 100644
--- a/boa/Cargo.toml
+++ b/boa/Cargo.toml
@@ -24,7 +24,7 @@ console = []
 boa_unicode = { path = "../boa_unicode", version = "0.11.0" }
 gc = { version = "0.4.1", features = ["derive"] }
 serde = { version = "1.0.126", features = ["derive", "rc"] }
-serde_json = "1.0.64"
+serde_json = "1.0.66"
 rand = "0.8.4"
 num-traits = "0.2.14"
 regress = "0.4.1"
diff --git a/boa_cli/Cargo.toml b/boa_cli/Cargo.toml
index f67966afb3..aa28c73b36 100644
--- a/boa_cli/Cargo.toml
+++ b/boa_cli/Cargo.toml
@@ -16,7 +16,7 @@ Boa = { path = "../boa", features = ["deser", "console"] }
 rustyline = "8.2.0"
 rustyline-derive = "0.4.0"
 structopt = "0.3.22"
-serde_json = "1.0.64"
+serde_json = "1.0.66"
 colored = "2.0.0"
 regex = "1.5.4"
 lazy_static = "1.4.0"
diff --git a/boa_tester/Cargo.toml b/boa_tester/Cargo.toml
index fd5e7e5108..77a7fc78da 100644
--- a/boa_tester/Cargo.toml
+++ b/boa_tester/Cargo.toml
@@ -15,7 +15,7 @@ Boa = { path = "../boa" }
 structopt = "0.3.22"
 serde = { version = "1.0.126", features = ["derive"] }
 serde_yaml = "0.8.17"
-serde_json = "1.0.64"
+serde_json = "1.0.66"
 bitflags = "1.2.1"
 regex = "1.5.4"
 once_cell = "1.8.0"