diff --git a/Cargo.toml b/Cargo.toml
index bac7e3f..2a07929 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -45,7 +45,6 @@ termcolor = { version = "0.3.0", path = "termcolor" }
 [build-dependencies]
 clap = "2.18"
 lazy_static = "0.2"
-regex = "0.2.1"
 
 [features]
 avx-accel = ["bytecount/avx-accel"]