diff --git a/Cargo.toml b/Cargo.toml
index 4d8963f93..0b7115d44 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,7 +22,6 @@ psd = "0.1.9"     # used for a doc example
 failure = "0.1.5" # used for a doc example
 
 [dependencies]
-cslice = "0.2"
 semver = "0.9.0"
 smallvec = "1.4.2"
 neon-runtime = { version = "=0.9.1", path = "crates/neon-runtime" }