diff --git a/Cargo.toml b/Cargo.toml
index 7ed8885..cb4c7f1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,6 @@ exclude = ["tests/images/*", "tests/fuzz_images/*"]
 [dependencies]
 byteorder = "1.2"
 lzw = "0.10"
-num-traits = "0.2"
 miniz_oxide = "0.3"
 
 [dev-dependencies]
diff --git a/src/decoder/mod.rs b/src/decoder/mod.rs
index cdace31..a3aff91 100644
--- a/src/decoder/mod.rs
+++ b/src/decoder/mod.rs
@@ -1,4 +1,3 @@
-use num_traits::{Num};
 use std::collections::HashMap;
 use std::io::{self, Read, Seek};
 use std::cmp;
@@ -236,7 +235,7 @@ impl Wrapping for u16 {
 
 fn rev_hpredict_nsamp<T>(image: &mut [T], size: (u32, u32), samples: usize)
 where
-    T: Num + Copy + Wrapping,
+    T: Copy + Wrapping,
 {
     let width = size.0 as usize;
     let height = size.1 as usize;
diff --git a/src/lib.rs b/src/lib.rs
index 3280de2..8550be3 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -9,7 +9,6 @@
 extern crate byteorder;
 extern crate lzw;
 extern crate miniz_oxide;
-extern crate num_traits;
 
 pub mod decoder;
 pub mod encoder;