diff --git a/Cargo.lock b/Cargo.lock
index 57bca1723d4..cb44f7f1d22 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1827,7 +1827,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "35bd3cf68c183738046838e300353e4716c674dc5e56890de4826801a6622a28"
 dependencies = [
  "futures-io",
- "rustls 0.21.5",
+ "rustls 0.21.6",
 ]
 
 [[package]]
@@ -3059,7 +3059,7 @@ dependencies = [
  "quickcheck",
  "quinn",
  "rand 0.8.5",
- "rustls 0.21.5",
+ "rustls 0.21.6",
  "thiserror",
  "tokio",
 ]
@@ -3240,7 +3240,7 @@ dependencies = [
  "libp2p-yamux",
  "rcgen 0.10.0",
  "ring",
- "rustls 0.21.5",
+ "rustls 0.21.6",
  "thiserror",
  "tokio",
  "webpki 0.22.0",
@@ -4326,7 +4326,7 @@ dependencies = [
  "quinn-proto",
  "quinn-udp",
  "rustc-hash",
- "rustls 0.21.5",
+ "rustls 0.21.6",
  "thiserror",
  "tokio",
  "tracing",
@@ -4342,7 +4342,7 @@ dependencies = [
  "rand 0.8.5",
  "ring",
  "rustc-hash",
- "rustls 0.21.5",
+ "rustls 0.21.6",
  "slab",
  "thiserror",
  "tinyvec",
@@ -4859,9 +4859,9 @@ dependencies = [
 
 [[package]]
 name = "rustls"
-version = "0.21.5"
+version = "0.21.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "79ea77c539259495ce8ca47f53e66ae0330a8819f67e23ac96ca02f50e7b7d36"
+checksum = "1d1feddffcfcc0b33f5c6ce9a29e341e4cd59c3f78e7ee45f4a40c038b1d6cbb"
 dependencies = [
  "log",
  "ring",
diff --git a/transports/quic/Cargo.toml b/transports/quic/Cargo.toml
index 5d810860912..662b8945f33 100644
--- a/transports/quic/Cargo.toml
+++ b/transports/quic/Cargo.toml
@@ -21,7 +21,7 @@ log = "0.4"
 parking_lot = "0.12.0"
 quinn = { version = "0.10.1", default-features = false, features = ["tls-rustls", "futures-io"] }
 rand = "0.8.5"
-rustls = { version = "0.21.2", default-features = false }
+rustls = { version = "0.21.6", default-features = false }
 thiserror = "1.0.44"
 tokio = { version = "1.29.1", default-features = false, features = ["net", "rt", "time"], optional = true }
 
diff --git a/transports/tls/Cargo.toml b/transports/tls/Cargo.toml
index 351fc7037f6..a56ed7eb82f 100644
--- a/transports/tls/Cargo.toml
+++ b/transports/tls/Cargo.toml
@@ -22,7 +22,7 @@ yasna = "0.5.2"
 
 # Exposed dependencies. Breaking changes to these are breaking changes to us.
 [dependencies.rustls]
-version = "0.21.2"
+version = "0.21.6"
 default-features = false
 features = ["dangerous_configuration"] # Must enable this to allow for custom verification code.