diff --git a/rust/Cargo.lock b/rust/Cargo.lock
index 6b9065cdd..9249f166a 100644
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -602,9 +602,9 @@ checksum = "9e1b586273c5702936fe7b7d6896644d8be71e6314cfe09d3167c95f712589e8"
 
 [[package]]
 name = "base64"
-version = "0.21.6"
+version = "0.21.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c79fed4cdb43e993fcdadc7e58a09fd0e3e649c4436fa11da71c9f1f3ee7feb9"
+checksum = "9d297deb1925b89f2ccc13d7635fa0714f12c87adce1c75356b39ca9b7178567"
 
 [[package]]
 name = "base64ct"
@@ -1218,7 +1218,7 @@ dependencies = [
 name = "connlib-shared"
 version = "1.0.0"
 dependencies = [
- "base64 0.21.6",
+ "base64 0.21.7",
  "boringtun",
  "chrono",
  "domain",
@@ -2009,7 +2009,7 @@ version = "1.0.0"
 dependencies = [
  "anyhow",
  "axum 0.7.3",
- "base64 0.21.6",
+ "base64 0.21.7",
  "bytecodec",
  "bytes",
  "clap",
@@ -4307,7 +4307,7 @@ version = "3.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1b8fcc794035347fb64beda2d3b462595dd2753e3f268d89c5aae77e8cf2c310"
 dependencies = [
- "base64 0.21.6",
+ "base64 0.21.7",
  "serde",
 ]
 
@@ -4464,7 +4464,7 @@ dependencies = [
 name = "phoenix-channel"
 version = "1.0.0"
 dependencies = [
- "base64 0.21.6",
+ "base64 0.21.7",
  "futures",
  "rand_core 0.6.4",
  "secrecy",
@@ -4548,7 +4548,7 @@ version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e5699cc8a63d1aa2b1ee8e12b9ad70ac790d65788cd36101fa37f87ea46c4cef"
 dependencies = [
- "base64 0.21.6",
+ "base64 0.21.7",
  "indexmap 2.1.0",
  "line-wrap",
  "quick-xml 0.31.0",
@@ -5039,7 +5039,7 @@ version = "0.11.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37b1ae8d9ac08420c66222fb9096fc5de435c3c48542bc5336c51892cffafb41"
 dependencies = [
- "base64 0.21.6",
+ "base64 0.21.7",
  "bytes",
  "encoding_rs",
  "futures-core",
@@ -5275,7 +5275,7 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1c74cae0a4cf6ccbbf5f359f08efdf8ee7e1dc532573bf0db71968cb56b1448c"
 dependencies = [
- "base64 0.21.6",
+ "base64 0.21.7",
 ]
 
 [[package]]
@@ -5560,7 +5560,7 @@ version = "3.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "64cd236ccc1b7a29e7e2739f27c0b2dd199804abc4290e32f59f3b68d6405c23"
 dependencies = [
- "base64 0.21.6",
+ "base64 0.21.7",
  "chrono",
  "hex",
  "indexmap 1.9.3",
@@ -5917,7 +5917,7 @@ name = "stun"
 version = "0.5.0"
 source = "git+https://github.com/firezone/webrtc?branch=expose-new-endpoint#4918ae812ab7e45b8ab000efbc316b5850290ddb"
 dependencies = [
- "base64 0.21.6",
+ "base64 0.21.7",
  "crc",
  "lazy_static",
  "md-5",
@@ -6243,7 +6243,7 @@ version = "1.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a1554c5857f65dbc377cefb6b97c8ac77b1cb2a90d30d3448114d5d6b48a77fc"
 dependencies = [
- "base64 0.21.6",
+ "base64 0.21.7",
  "brotli",
  "ico",
  "json-patch",
@@ -6660,7 +6660,7 @@ checksum = "3082666a3a6433f7f511c7192923fa1fe07c69332d3c6a2e6bb040b569199d5a"
 dependencies = [
  "async-trait",
  "axum 0.6.20",
- "base64 0.21.6",
+ "base64 0.21.7",
  "bytes",
  "futures-core",
  "futures-util",
@@ -6964,7 +6964,7 @@ version = "0.7.0"
 source = "git+https://github.com/firezone/webrtc?branch=expose-new-endpoint#4918ae812ab7e45b8ab000efbc316b5850290ddb"
 dependencies = [
  "async-trait",
- "base64 0.21.6",
+ "base64 0.21.7",
  "futures",
  "log",
  "md-5",
diff --git a/rust/phoenix-channel/Cargo.toml b/rust/phoenix-channel/Cargo.toml
index c2939b8fb..f56bfa537 100644
--- a/rust/phoenix-channel/Cargo.toml
+++ b/rust/phoenix-channel/Cargo.toml
@@ -10,7 +10,7 @@ edition = "2021"
 secrecy = { workspace = true }
 tokio-tungstenite = { version = "0.20.1", features = ["rustls-tls-native-roots"] }
 futures = "0.3.29"
-base64 = "0.21.5"
+base64 = "0.21.7"
 serde = { version = "1.0.190", features = ["derive"] }
 tracing = { workspace = true }
 rand_core = "0.6.4"
diff --git a/rust/relay/Cargo.toml b/rust/relay/Cargo.toml
index 8f8fdcfdc..109adcbd0 100644
--- a/rust/relay/Cargo.toml
+++ b/rust/relay/Cargo.toml
@@ -26,7 +26,7 @@ env_logger = "0.10.1"
 tracing-core = "0.1.31"
 bytes = "1.4.0"
 sha2 = "0.10.8"
-base64 = "0.21.5"
+base64 = "0.21.7"
 once_cell = "1.17.1"
 proptest = { version = "1.4.0", optional = true }
 test-strategy = "0.3.1"