diff --git a/Cargo.lock b/Cargo.lock
index 05e97780213df..f514793251069 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -652,7 +652,7 @@ version = "0.31.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8257238e2a3629ee5618502a75d1b91f8017c24638c75349fc8d2d80cf1f7c4c"
 dependencies = [
- "base64 0.21.2",
+ "base64 0.21.3",
  "bytes 1.4.0",
  "futures 0.3.28",
  "http",
@@ -1368,7 +1368,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "86b0f0eea648347e40f5f7f7e6bfea4553bcefad0fbf52044ea339e5ce3aba61"
 dependencies = [
  "async-trait",
- "base64 0.21.2",
+ "base64 0.21.3",
  "bytes 1.4.0",
  "dyn-clone",
  "futures 0.3.28",
@@ -1510,9 +1510,9 @@ checksum = "0ea22880d78093b0cbe17c89f64a7d457941e65759157ec6cb31a31d652b05e5"
 
 [[package]]
 name = "base64"
-version = "0.21.2"
+version = "0.21.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "604178f6c5c21f02dc555784810edfb88d34ac2c73b2eae109655649ee73ce3d"
+checksum = "414dcefbc63d77c526a76b3afcf6fbb9b5e2791c19c3aa2297733208750c6e53"
 
 [[package]]
 name = "base64-simd"
@@ -1625,7 +1625,7 @@ version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "af254ed2da4936ef73309e9597180558821cb16ae9bba4cb24ce6b612d8d80ed"
 dependencies = [
- "base64 0.21.2",
+ "base64 0.21.3",
  "bollard-stubs",
  "bytes 1.4.0",
  "chrono",
@@ -4629,7 +4629,7 @@ version = "0.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cd990069640f9db34b3b0f7a1afc62a05ffaa3be9b66aa3c313f58346df7f788"
 dependencies = [
- "base64 0.21.2",
+ "base64 0.21.3",
  "bytes 1.4.0",
  "chrono",
  "http",
@@ -5764,7 +5764,7 @@ dependencies = [
  "async-compat",
  "async-trait",
  "backon",
- "base64 0.21.2",
+ "base64 0.21.3",
  "bytes 1.4.0",
  "chrono",
  "flagset",
@@ -6302,7 +6302,7 @@ version = "0.6.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "49b6c5ef183cd3ab4ba005f1ca64c21e8bd97ce4699cfea9e8d9a2c4958ca520"
 dependencies = [
- "base64 0.21.2",
+ "base64 0.21.3",
  "byteorder",
  "bytes 1.4.0",
  "fallible-iterator",
@@ -6573,7 +6573,7 @@ version = "0.11.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "000e1e05ebf7b26e1eba298e66fe4eee6eb19c567d0ffb35e0dd34231cdac4c8"
 dependencies = [
- "base64 0.21.2",
+ "base64 0.21.3",
  "once_cell",
  "prost",
  "prost-types",
@@ -7068,7 +7068,7 @@ version = "0.11.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3e9ad3fe7488d7e34558a2033d45a0c90b72d97b4f80705666fea71472e2e6a1"
 dependencies = [
- "base64 0.21.2",
+ "base64 0.21.3",
  "bytes 1.4.0",
  "encoding_rs",
  "futures-core",
@@ -7359,7 +7359,7 @@ version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2d3987094b1d07b653b7dfdc3f70ce9a1da9c51ac18c1b06b662e4f9a0e9f4b2"
 dependencies = [
- "base64 0.21.2",
+ "base64 0.21.3",
 ]
 
 [[package]]
@@ -7730,7 +7730,7 @@ version = "3.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1ca3b16a3d82c4088f343b7480a93550b3eabe1a358569c2dfe38bbcead07237"
 dependencies = [
- "base64 0.21.2",
+ "base64 0.21.3",
  "chrono",
  "hex",
  "indexmap 1.9.3",
@@ -8749,7 +8749,7 @@ dependencies = [
  "async-stream",
  "async-trait",
  "axum",
- "base64 0.21.2",
+ "base64 0.21.3",
  "bytes 1.4.0",
  "flate2",
  "futures-core",
@@ -8813,7 +8813,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "55ae70283aba8d2a8b411c695c437fe25b8b5e44e23e780662002fc72fb47a82"
 dependencies = [
  "async-compression",
- "base64 0.21.2",
+ "base64 0.21.3",
  "bitflags 2.3.2",
  "bytes 1.4.0",
  "futures-core",
@@ -9449,7 +9449,7 @@ dependencies = [
  "azure_identity",
  "azure_storage",
  "azure_storage_blobs",
- "base64 0.21.2",
+ "base64 0.21.3",
  "bloomy",
  "bollard",
  "bytes 1.4.0",
@@ -9770,7 +9770,7 @@ dependencies = [
  "async-graphql 5.0.10",
  "async-stream",
  "async-trait",
- "base64 0.21.2",
+ "base64 0.21.3",
  "bitmask-enum",
  "bytes 1.4.0",
  "chrono",
@@ -9929,7 +9929,7 @@ dependencies = [
  "anymap",
  "arbitrary",
  "base16",
- "base64 0.21.2",
+ "base64 0.21.3",
  "bytes 1.4.0",
  "cbc",
  "cfb-mode",
@@ -10513,7 +10513,7 @@ checksum = "c6f71803d3a1c80377a06221e0530be02035d5b3e854af56c6ece7ac20ac441d"
 dependencies = [
  "assert-json-diff 2.0.2",
  "async-trait",
- "base64 0.21.2",
+ "base64 0.21.3",
  "deadpool",
  "futures 0.3.28",
  "futures-timer",
diff --git a/Cargo.toml b/Cargo.toml
index 543fb8db2a7ff..b0d7e38e49164 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -248,7 +248,7 @@ arc-swap = { version = "1.6", default-features = false, optional = true }
 async-compression = { version = "0.4.1", default-features = false, features = ["tokio", "gzip", "zstd"], optional = true }
 apache-avro = { version = "0.15.0", default-features = false, optional = true }
 axum = { version = "0.6.20", default-features = false }
-base64 = { version = "0.21.2", default-features = false, optional = true }
+base64 = { version = "0.21.3", default-features = false, optional = true }
 bloomy  = { version = "1.2.0", default-features = false, optional = true }
 bollard = { version = "0.14.0", default-features = false, features = ["ssl", "chrono"], optional = true }
 bytes = { version = "1.4.0", default-features = false, features = ["serde"] }
@@ -358,7 +358,7 @@ azure_core = { version = "0.13", default-features = false, features = ["enable_r
 azure_identity = { version = "0.13", default-features = false, features = ["enable_reqwest"] }
 azure_storage_blobs = { version = "0.13", default-features = false, features = ["azurite_workaround"] }
 azure_storage = { version = "0.13", default-features = false }
-base64 = "0.21.2"
+base64 = "0.21.3"
 criterion = { version = "0.5.1", features = ["html_reports", "async_tokio"] }
 itertools = { version = "0.11.0", default-features = false, features = ["use_alloc"] }
 libc = "0.2.147"
diff --git a/lib/vector-core/Cargo.toml b/lib/vector-core/Cargo.toml
index bee1a7f671081..ead741af544cc 100644
--- a/lib/vector-core/Cargo.toml
+++ b/lib/vector-core/Cargo.toml
@@ -78,7 +78,7 @@ schannel = "0.1.22"
 prost-build = "0.11"
 
 [dev-dependencies]
-base64 = "0.21.2"
+base64 = "0.21.3"
 chrono-tz = { version = "0.8.3", default-features = false }
 criterion = { version = "0.5.1", features = ["html_reports"] }
 env-test-util = "1.0.1"