diff --git a/Cargo.lock b/Cargo.lock
index e3b2a4f886c..453607ac24d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -340,9 +340,9 @@ checksum = "904dfeac50f3cdaba28fc6f57fdcddb75f49ed61346676a78c4ffe55877802fd"
 
 [[package]]
 name = "base64"
-version = "0.21.3"
+version = "0.21.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "414dcefbc63d77c526a76b3afcf6fbb9b5e2791c19c3aa2297733208750c6e53"
+checksum = "9ba43ea6f343b788c8764558649e08df62f86c6ef251fdaeb1ffd010a9ae50a2"
 
 [[package]]
 name = "binary-space-partition"
@@ -994,7 +994,7 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "754c060c4a3342c5824d14caeba6c588716e9327f50558532685ef56718e0461"
 dependencies = [
- "base64 0.21.3",
+ "base64 0.21.4",
  "bitflags 2.4.0",
  "once_cell",
  "percent-encoding",
@@ -2606,7 +2606,7 @@ version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "06683b93020a07e3dbcf5f8c0f6d40080d725bea7936fc01ad345c01b97dc270"
 dependencies = [
- "base64 0.21.3",
+ "base64 0.21.4",
  "bytes",
  "headers-core",
  "http",
@@ -3823,7 +3823,7 @@ version = "0.0.1"
 dependencies = [
  "async-recursion",
  "async-tungstenite",
- "base64 0.21.3",
+ "base64 0.21.4",
  "brotli",
  "bytes",
  "content-security-policy",
@@ -4813,7 +4813,7 @@ version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2d3987094b1d07b653b7dfdc3f70ce9a1da9c51ac18c1b06b662e4f9a0e9f4b2"
 dependencies = [
- "base64 0.21.3",
+ "base64 0.21.4",
 ]
 
 [[package]]
@@ -4878,7 +4878,7 @@ dependencies = [
  "arrayvec 0.7.4",
  "atomic_refcell",
  "backtrace",
- "base64 0.21.3",
+ "base64 0.21.4",
  "bitflags 2.4.0",
  "bluetooth_traits",
  "canvas_traits",
@@ -6795,7 +6795,7 @@ dependencies = [
 name = "webdriver_server"
 version = "0.0.1"
 dependencies = [
- "base64 0.21.3",
+ "base64 0.21.4",
  "compositing_traits",
  "cookie 0.12.0",
  "crossbeam-channel",
diff --git a/Cargo.toml b/Cargo.toml
index 9a2157cd63d..ebf5aabcdaa 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,7 +17,7 @@ async-tungstenite = { version = "0.22", features = ["tokio-rustls-webpki-roots"]
 atomic_refcell = "0.1.11"
 arrayvec = "0.7"
 backtrace = "0.3"
-base64 = "0.21.3"
+base64 = "0.21.4"
 bitflags = "2.4"
 byteorder = "1.0"
 cfg-if = "1.0.0"