diff --git a/Cargo.lock b/Cargo.lock
index 29bc7679ded80..35d029ec26df3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -6121,9 +6121,9 @@ dependencies = [
 
 [[package]]
 name = "openssl"
-version = "0.10.64"
+version = "0.10.66"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95a0481286a310808298130d22dd1fef0fa571e05a8f44ec801801e84b216b1f"
+checksum = "9529f4786b70a3e8c61e11179af17ab6188ad8d0ded78c5529441ed39d4bd9c1"
 dependencies = [
  "bitflags 2.4.1",
  "cfg-if",
@@ -6162,9 +6162,9 @@ dependencies = [
 
 [[package]]
 name = "openssl-sys"
-version = "0.9.101"
+version = "0.9.103"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dda2b0f344e78efc2facf7d195d098df0dd72151b26ab98da807afc26c198dff"
+checksum = "7f9e8deee91df40a943c71b917e5874b951d32a802526c85721ce3b776c929d6"
 dependencies = [
  "cc",
  "libc",
diff --git a/Cargo.toml b/Cargo.toml
index 5c310cbca6c40..3f35104b5f37e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -315,7 +315,7 @@ nkeys = { version = "0.4.1", default-features = false, optional = true }
 nom = { version = "7.1.3", default-features = false, optional = true }
 notify = { version = "6.1.1", default-features = false, features = ["macos_fsevent"] }
 once_cell = { version = "1.19", default-features = false }
-openssl = { version = "0.10.64", default-features = false, features = ["vendored"] }
+openssl = { version = "0.10.66", default-features = false, features = ["vendored"] }
 openssl-probe = { version = "0.1.5", default-features = false }
 ordered-float = { version = "4.2.1", default-features = false }
 paste = "1.0.15"
diff --git a/lib/vector-core/Cargo.toml b/lib/vector-core/Cargo.toml
index c7b937052c0a3..d8e588978be3c 100644
--- a/lib/vector-core/Cargo.toml
+++ b/lib/vector-core/Cargo.toml
@@ -32,7 +32,7 @@ mlua = { version = "0.9.9", default-features = false, features = ["lua54", "send
 no-proxy = { version  = "0.3.4", default-features = false, features = ["serialize"] }
 once_cell = { version = "1.19", default-features = false }
 ordered-float = { version = "4.2.1", default-features = false }
-openssl = { version = "0.10.64", default-features = false, features = ["vendored"] }
+openssl = { version = "0.10.66", default-features = false, features = ["vendored"] }
 parking_lot = { version = "0.12.3", default-features = false }
 pin-project.workspace = true
 proptest = { version = "1.5", optional = true }