diff --git a/src/Cargo.lock b/src/Cargo.lock
index 62b853480394f..80a8596a499c7 100644
--- a/src/Cargo.lock
+++ b/src/Cargo.lock
@@ -269,7 +269,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "mdbook"
-version = "0.0.18"
+version = "0.0.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "clap 2.22.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -425,7 +425,7 @@ name = "rustbook"
 version = "0.1.0"
 dependencies = [
  "clap 2.22.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "mdbook 0.0.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "mdbook 0.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1004,7 +1004,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum lazy_static 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "4732c563b9a21a406565c4747daa7b46742f082911ae4753f390dc9ec7ee1a97"
 "checksum libc 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)" = "88ee81885f9f04bff991e306fea7c1c60a5f0f9e409e99f6b40e3311a3363135"
 "checksum log 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "5141eca02775a762cc6cd564d8d2c50f67c0ea3a372cbf1c51592b3e029e10ad"
-"checksum mdbook 0.0.18 (registry+https://github.com/rust-lang/crates.io-index)" = "06a68e8738e42b38a02755d3ce5fa12d559e17acb238e4326cbc3cc056e65280"
+"checksum mdbook 0.0.19 (registry+https://github.com/rust-lang/crates.io-index)" = "2598843aeda0c5bb2e8e4d714564f1c3fc40f7844157e34563bf96ae3866b56e"
 "checksum memchr 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "1dbccc0e46f1ea47b9f17e6d67c5a96bd27030519c519c9c91327e31275a47b4"
 "checksum num-traits 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)" = "e1cbfa3781f3fe73dc05321bed52a06d2d491eaa764c52335cf4399f046ece99"
 "checksum num_cpus 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)" = "cee7e88156f3f9e19bdd598f8d6c9db7bf4078f99f8381f43a55b09648d1a6e3"
diff --git a/src/tools/rustbook/Cargo.toml b/src/tools/rustbook/Cargo.toml
index d5b95c08306b2..e320933067226 100644
--- a/src/tools/rustbook/Cargo.toml
+++ b/src/tools/rustbook/Cargo.toml
@@ -8,5 +8,5 @@ license = "MIT/Apache-2.0"
 clap = "2.19.3"
 
 [dependencies.mdbook]
-version = "0.0.18"
+version = "0.0.19"
 default-features = false