diff --git a/components/canvas/Cargo.toml b/components/canvas/Cargo.toml
index ff31840b39d..11a0580c34e 100644
--- a/components/canvas/Cargo.toml
+++ b/components/canvas/Cargo.toml
@@ -38,5 +38,5 @@ git = "https://github.com/servo/webrender_traits"
 euclid = {version = "0.6.4", features = ["plugins"]}
 gleam = "0.2.8"
 log = "0.3.5"
-num = "0.1.24"
+num-traits = "0.1.32"
 offscreen_gl_context = "0.1.2"
diff --git a/components/canvas/canvas_paint_thread.rs b/components/canvas/canvas_paint_thread.rs
index 91630915cdc..36fbbe94570 100644
--- a/components/canvas/canvas_paint_thread.rs
+++ b/components/canvas/canvas_paint_thread.rs
@@ -14,7 +14,7 @@ use euclid::size::Size2D;
 use gfx_traits::color;
 use ipc_channel::ipc::IpcSharedMemory;
 use ipc_channel::ipc::{self, IpcSender};
-use num::ToPrimitive;
+use num_traits::ToPrimitive;
 use std::borrow::ToOwned;
 use std::mem;
 use util::opts;
diff --git a/components/canvas/lib.rs b/components/canvas/lib.rs
index 8a5ecce9217..1aee40b1e14 100644
--- a/components/canvas/lib.rs
+++ b/components/canvas/lib.rs
@@ -17,7 +17,7 @@ extern crate ipc_channel;
 extern crate layers;
 #[macro_use]
 extern crate log;
-extern crate num;
+extern crate num_traits;
 extern crate offscreen_gl_context;
 extern crate util;
 extern crate webrender_traits;
diff --git a/components/servo/Cargo.lock b/components/servo/Cargo.lock
index 2720e51b000..eecbb16dbf8 100644
--- a/components/servo/Cargo.lock
+++ b/components/servo/Cargo.lock
@@ -169,7 +169,7 @@ dependencies = [
  "ipc-channel 0.2.2 (git+https://github.com/servo/ipc-channel)",
  "layers 0.2.4 (git+https://github.com/servo/rust-layers)",
  "log 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "num 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
  "offscreen_gl_context 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "plugins 0.0.1",
  "util 0.0.1",
diff --git a/ports/cef/Cargo.lock b/ports/cef/Cargo.lock
index 9a924ee6803..4a7c13c5445 100644
--- a/ports/cef/Cargo.lock
+++ b/ports/cef/Cargo.lock
@@ -154,7 +154,7 @@ dependencies = [
  "ipc-channel 0.2.2 (git+https://github.com/servo/ipc-channel)",
  "layers 0.2.4 (git+https://github.com/servo/rust-layers)",
  "log 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "num 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
  "offscreen_gl_context 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "plugins 0.0.1",
  "util 0.0.1",
diff --git a/ports/gonk/Cargo.lock b/ports/gonk/Cargo.lock
index 6a76a679eb0..056921876f4 100644
--- a/ports/gonk/Cargo.lock
+++ b/ports/gonk/Cargo.lock
@@ -147,7 +147,7 @@ dependencies = [
  "ipc-channel 0.2.2 (git+https://github.com/servo/ipc-channel)",
  "layers 0.2.4 (git+https://github.com/servo/rust-layers)",
  "log 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "num 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
  "offscreen_gl_context 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "plugins 0.0.1",
  "util 0.0.1",