diff --git a/src/rust/Cargo.lock b/src/rust/Cargo.lock
index fe3398f25393..c5a020fc8f10 100644
--- a/src/rust/Cargo.lock
+++ b/src/rust/Cargo.lock
@@ -179,9 +179,9 @@ checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
 
 [[package]]
 name = "openssl"
-version = "0.10.65"
+version = "0.10.66"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c2823eb4c6453ed64055057ea8bd416eda38c71018723869dd043a3b1186115e"
+checksum = "9529f4786b70a3e8c61e11179af17ab6188ad8d0ded78c5529441ed39d4bd9c1"
 dependencies = [
  "bitflags",
  "cfg-if",
diff --git a/src/rust/Cargo.toml b/src/rust/Cargo.toml
index d58ee9e7ec28..4a91705de96c 100644
--- a/src/rust/Cargo.toml
+++ b/src/rust/Cargo.toml
@@ -26,7 +26,7 @@ cryptography-x509 = { path = "cryptography-x509" }
 cryptography-x509-verification = { path = "cryptography-x509-verification" }
 cryptography-openssl = { path = "cryptography-openssl" }
 pem = { version = "3", default-features = false }
-openssl = "0.10.65"
+openssl = "0.10.66"
 openssl-sys = "0.9.103"
 foreign-types-shared = "0.1"
 self_cell = "1"
diff --git a/src/rust/cryptography-key-parsing/Cargo.toml b/src/rust/cryptography-key-parsing/Cargo.toml
index d1f945f961a0..e88e3bc9e691 100644
--- a/src/rust/cryptography-key-parsing/Cargo.toml
+++ b/src/rust/cryptography-key-parsing/Cargo.toml
@@ -9,6 +9,6 @@ rust-version.workspace = true
 [dependencies]
 asn1 = { version = "0.16.2", default-features = false }
 cfg-if = "1"
-openssl = "0.10.65"
+openssl = "0.10.66"
 openssl-sys = "0.9.103"
 cryptography-x509 = { path = "../cryptography-x509" }
diff --git a/src/rust/cryptography-openssl/Cargo.toml b/src/rust/cryptography-openssl/Cargo.toml
index c0f3f5d72ce1..f340ed87cf53 100644
--- a/src/rust/cryptography-openssl/Cargo.toml
+++ b/src/rust/cryptography-openssl/Cargo.toml
@@ -8,7 +8,7 @@ rust-version.workspace = true
 
 [dependencies]
 cfg-if = "1"
-openssl = "0.10.65"
+openssl = "0.10.66"
 ffi = { package = "openssl-sys", version = "0.9.101" }
 foreign-types = "0.3"
 foreign-types-shared = "0.1"