diff --git a/Cargo.lock b/Cargo.lock
index afc46c31d..c197710a9 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -240,7 +240,7 @@ dependencies = [
  "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
  "matches 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "mbedtls-sys-auto 2.18.4",
+ "mbedtls-sys-auto 2.18.5",
  "rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "rc2 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rs-libc 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -253,7 +253,7 @@ dependencies = [
 
 [[package]]
 name = "mbedtls-sys-auto"
-version = "2.18.4"
+version = "2.18.5"
 dependencies = [
  "bindgen 0.19.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "cmake 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/README.md b/README.md
index 1546fd43a..79a2ffb96 100644
--- a/README.md
+++ b/README.md
@@ -105,6 +105,7 @@ This is a list of the Cargo features available for mbedtls-sys. Features in
           memmove/memcpy/memcmp/memset, and rand/printf. For printf, you can
           optionally use the `custom_printf` feature.
 * **time** Enable time support.
+* *trusted_cert_callback* Enable trusted certificate callback support.
 * **zlib** Enable zlib support.
 
 For the complete mapping of features to config.h defines, see
diff --git a/mbedtls-sys/Cargo.toml b/mbedtls-sys/Cargo.toml
index dc5aa8968..f0dd423c8 100644
--- a/mbedtls-sys/Cargo.toml
+++ b/mbedtls-sys/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "mbedtls-sys-auto"
-version = "2.18.4"
+version = "2.18.5"
 authors = ["Jethro Beekman <jethro@fortanix.com>"]
 build = "build/build.rs"
 license = "Apache-2.0/GPL-2.0+"
diff --git a/mbedtls/Cargo.toml b/mbedtls/Cargo.toml
index 4a958aaf9..307cda240 100644
--- a/mbedtls/Cargo.toml
+++ b/mbedtls/Cargo.toml
@@ -33,7 +33,7 @@ rc2 = { version = "0.3", optional = true }
 rs-libc = "0.1.0"
 
 [dependencies.mbedtls-sys-auto]
-version = "2.18.0"
+version = "2.18.5"
 default-features = false
 features = ["custom_printf", "trusted_cert_callback"]
 path = "../mbedtls-sys"