diff --git a/Cargo.lock b/Cargo.lock
index 8a7e6911..e8b32b9d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -301,7 +301,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e310b3a6b5907f99202fcdb4960ff45b93735d7c7d96b760fcff8db2dc0e103d"
 dependencies = [
  "cfg-if",
- "windows-targets 0.48.5",
+ "windows-targets 0.52.4",
 ]
 
 [[package]]
@@ -492,9 +492,9 @@ dependencies = [
 
 [[package]]
 name = "rustls"
-version = "0.23.4"
+version = "0.23.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c4d6d8ad9f2492485e13453acbb291dd08f64441b6609c491f1c2cd2c6b4fe1"
+checksum = "4828ea528154ae444e5a642dbb7d5623354030dc9822b83fd9bb79683c7399d0"
 dependencies = [
  "aws-lc-rs",
  "once_cell",
@@ -546,9 +546,9 @@ dependencies = [
 
 [[package]]
 name = "rustls-pki-types"
-version = "1.3.1"
+version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5ede67b28608b4c60685c7d54122d4400d90f62b40caee7700e700380a390fa8"
+checksum = "976295e77ce332211c0d24d92c0e83e50f5c5f046d11082cea19f3df13a3562d"
 
 [[package]]
 name = "rustls-platform-verifier"
@@ -579,9 +579,9 @@ checksum = "84e217e7fdc8466b5b35d30f8c0a30febd29173df4a3a0c2115d306b9c4117ad"
 
 [[package]]
 name = "rustls-webpki"
-version = "0.102.2"
+version = "0.102.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "faaa0a62740bedb9b2ef5afa303da42764c012f743917351dc9a237ea1663610"
+checksum = "f9a6fccd794a42c2c105b513a2f62bc3fd8f3ba57a4593677ceb0bd035164d78"
 dependencies = [
  "aws-lc-rs",
  "ring",
diff --git a/Cargo.toml b/Cargo.toml
index ea05d2f9..8ce5fcc4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,7 +27,7 @@ aws_lc_rs = ["rustls/aws_lc_rs", "webpki/aws_lc_rs"]
 
 [dependencies]
 # Keep in sync with RUSTLS_CRATE_VERSION in build.rs
-rustls = { version = "0.23.4", default-features = false, features = ["std", "tls12"] }
+rustls = { version = "0.23.11", default-features = false, features = ["std", "tls12"] }
 pki-types = { package = "rustls-pki-types", version = "1", features = ["std"] }
 webpki = { package = "rustls-webpki", version = "0.102.0", default-features = false, features = ["std"] }
 libc = "0.2"
diff --git a/build.rs b/build.rs
index 5e4c14ee..e8acbad0 100644
--- a/build.rs
+++ b/build.rs
@@ -8,7 +8,7 @@ use std::{env, fs, path::PathBuf};
 // because doing so would require a heavy-weight deserialization lib dependency
 // (and it couldn't be a _dev_ dep for use in a build script) or doing brittle
 // by-hand parsing.
-const RUSTLS_CRATE_VERSION: &str = "0.23.4";
+const RUSTLS_CRATE_VERSION: &str = "0.23.11";
 
 fn main() {
     let out_dir = PathBuf::from(env::var_os("OUT_DIR").unwrap());