diff --git a/Cargo.lock b/Cargo.lock
index f5b658b8b5..c544a7b14e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3295,9 +3295,9 @@ dependencies = [
 
 [[package]]
 name = "serde_yaml"
-version = "0.9.27"
+version = "0.9.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3cc7a1570e38322cfe4154732e5110f887ea57e22b76f4bfd32b5bdd3368666c"
+checksum = "9269cfafc7e0257ee4a42f3f68a307f458c63d9e7c8ba4b58c5d15f1b7d7e8d3"
 dependencies = [
  "indexmap 2.1.0",
  "itoa",
@@ -3947,9 +3947,9 @@ checksum = "f962df74c8c05a667b5ee8bcf162993134c104e96440b663c8daa176dc772d8c"
 
 [[package]]
 name = "unsafe-libyaml"
-version = "0.2.9"
+version = "0.2.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f28467d3e1d3c6586d8f25fa243f544f5800fec42d97032474e17222c2b75cfa"
+checksum = "ab4c90930b95a82d00dc9e9ac071b4991924390d46cbd0dfe566148667605e4b"
 
 [[package]]
 name = "untrusted"
diff --git a/tests/tester/Cargo.toml b/tests/tester/Cargo.toml
index c4d95a11df..6a49ea99e9 100644
--- a/tests/tester/Cargo.toml
+++ b/tests/tester/Cargo.toml
@@ -17,7 +17,7 @@ boa_runtime.workspace = true
 boa_gc.workspace = true
 clap = { workspace = true, features = ["derive"] }
 serde = { workspace = true, features = ["derive"] }
-serde_yaml = "0.9.27"
+serde_yaml = "0.9.28"
 serde_json.workspace = true
 bitflags.workspace = true
 regex.workspace = true