diff --git a/Cargo.toml b/Cargo.toml
index 97553800..4c10f777 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -52,11 +52,11 @@ afserde = ["serde"]
 libc = "0.2"
 num  = "0.4.0"
 lazy_static = "1.0"
-half = "1.5.0"
+half = { version = "2.2.1" , features = ["num-traits"] }
 serde = { version = "1.0", features = ["derive"], optional = true }
 
 [dev-dependencies]
-half = "1.5.0"
+half = { version = "2.2.1" , features = ["num-traits"] }
 serde_json = "1.0"
 bincode = "1.3"
 mnist = {version="0.5.0", features = ["download"]}