diff --git a/components/script/Cargo.toml b/components/script/Cargo.toml
index 11fc27334eb..f9ddac1df14 100644
--- a/components/script/Cargo.toml
+++ b/components/script/Cargo.toml
@@ -72,7 +72,7 @@ euclid = {version = "0.6.2", features = ["plugins"]}
 fnv = "1.0"
 heapsize = "0.2.5"
 heapsize_plugin = "0.1.2"
-html5ever = {version = "0.5.0", features = ["heap_size", "unstable"]}
+html5ever = {version = "0.5.1", features = ["heap_size", "unstable"]}
 hyper = { version = "0.7", features = [ "serde-serialization" ] }
 image = "0.5.0"
 libc = "0.2"
diff --git a/components/servo/Cargo.lock b/components/servo/Cargo.lock
index ea48c1d46f4..90d21b7110a 100644
--- a/components/servo/Cargo.lock
+++ b/components/servo/Cargo.lock
@@ -828,7 +828,7 @@ dependencies = [
 
 [[package]]
 name = "html5ever"
-version = "0.5.0"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "heapsize 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1576,7 +1576,7 @@ dependencies = [
  "gfx_traits 0.0.1",
  "heapsize 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "html5ever 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "html5ever 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "image 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.2.0 (git+https://github.com/servo/ipc-channel)",
diff --git a/ports/cef/Cargo.lock b/ports/cef/Cargo.lock
index f96365bd733..5fd8769bd90 100644
--- a/ports/cef/Cargo.lock
+++ b/ports/cef/Cargo.lock
@@ -759,7 +759,7 @@ dependencies = [
 
 [[package]]
 name = "html5ever"
-version = "0.5.0"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "heapsize 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1463,7 +1463,7 @@ dependencies = [
  "gfx_traits 0.0.1",
  "heapsize 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "html5ever 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "html5ever 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "image 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.2.0 (git+https://github.com/servo/ipc-channel)",
diff --git a/ports/gonk/Cargo.lock b/ports/gonk/Cargo.lock
index e4402e83b59..e31024523cc 100644
--- a/ports/gonk/Cargo.lock
+++ b/ports/gonk/Cargo.lock
@@ -741,7 +741,7 @@ dependencies = [
 
 [[package]]
 name = "html5ever"
-version = "0.5.0"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "heapsize 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1445,7 +1445,7 @@ dependencies = [
  "gfx_traits 0.0.1",
  "heapsize 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "html5ever 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "html5ever 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "image 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.2.0 (git+https://github.com/servo/ipc-channel)",