diff --git a/Cargo.lock b/Cargo.lock
index 9d6611e4dcffc..2cdab7eacbeca 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3904,12 +3904,11 @@ dependencies = [
 
 [[package]]
 name = "headers"
-version = "0.3.8"
+version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f3e372db8e5c0d213e0cd0b9be18be2aca3d44cf2fe30a9d46a65581cd454584"
+checksum = "06683b93020a07e3dbcf5f8c0f6d40080d725bea7936fc01ad345c01b97dc270"
 dependencies = [
- "base64 0.13.1",
- "bitflags 1.3.2",
+ "base64 0.21.3",
  "bytes 1.4.0",
  "headers-core",
  "http",
diff --git a/Cargo.toml b/Cargo.toml
index 2a1afe5831547..3671121584c36 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -272,7 +272,7 @@ grok = { version = "2.0.0", default-features = false, optional = true }
 h2 = { version = "0.3.21", default-features = false, optional = true }
 hash_hasher = { version = "2.0.0", default-features = false }
 hashbrown = { version = "0.14.0", default-features = false, optional = true, features = ["ahash"] }
-headers = { version = "0.3.8", default-features = false }
+headers = { version = "0.3.9", default-features = false }
 hostname = { version = "0.3.1", default-features = false }
 http = { version = "0.2.9", default-features = false }
 http-serde = "1.1.3"
diff --git a/lib/vector-core/Cargo.toml b/lib/vector-core/Cargo.toml
index a4ae462d21e8c..c06bf1f2c913b 100644
--- a/lib/vector-core/Cargo.toml
+++ b/lib/vector-core/Cargo.toml
@@ -20,7 +20,7 @@ enumflags2 = { version = "0.7.7", default-features = false }
 float_eq = { version = "1.0", default-features = false }
 futures = { version = "0.3.28", default-features = false, features = ["std"] }
 futures-util = { version = "0.3.28", default-features = false, features = ["std"] }
-headers = { version = "0.3.8", default-features = false }
+headers = { version = "0.3.9", default-features = false }
 http = { version = "0.2.9", default-features = false }
 hyper-proxy = { version = "0.9.1", default-features = false, features = ["openssl-tls"] }
 indexmap = { version = "~2.0.0", default-features = false, features = ["serde", "std"] }