diff --git a/Cargo.lock b/Cargo.lock
index 2d74c1caae..69f0cb7590 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -943,9 +943,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.4.1"
+version = "1.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8963b85b8ce3074fecffde43b4b0dded83ce2f367dc8d363afc56679f3ee820b"
+checksum = "38cf2c13ed4745de91a5eb834e11c00bcc3709e773173b2ce4c56c9fbde04b9c"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -964,9 +964,9 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.6.20"
+version = "0.6.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8cab7a364d15cde1e505267766a2d3c4e22a843e1a601f0fa7564c0f82ced11c"
+checksum = "3b181ba2dcf07aaccad5448e8ead58db5b742cf85dfe035e2227f137a539a189"
 
 [[package]]
 name = "regress"
diff --git a/boa_cli/Cargo.toml b/boa_cli/Cargo.toml
index cfb14224d6..df70de1b43 100644
--- a/boa_cli/Cargo.toml
+++ b/boa_cli/Cargo.toml
@@ -18,7 +18,7 @@ rustyline-derive = "0.3.1"
 structopt = "0.3.20"
 serde_json = "1.0.59"
 colored = "2.0.0"
-regex = "1.4.1"
+regex = "1.4.2"
 lazy_static = "1.4.0"
 
 [target.x86_64-unknown-linux-gnu.dependencies]
diff --git a/boa_tester/Cargo.toml b/boa_tester/Cargo.toml
index e16d705f35..71d81d23c9 100644
--- a/boa_tester/Cargo.toml
+++ b/boa_tester/Cargo.toml
@@ -17,7 +17,7 @@ serde = { version = "1.0.117", features = ["derive"] }
 serde_yaml = "0.8.14"
 serde_json = "1.0.59"
 bitflags = "1.2.1"
-regex = "1.4.1"
+regex = "1.4.2"
 once_cell = "1.4.1"
 colored = "2.0.0"
 fxhash = "0.2.1"