diff --git a/tool/Cargo.toml b/tool/Cargo.toml
index cedd909..2f315e6 100644
--- a/tool/Cargo.toml
+++ b/tool/Cargo.toml
@@ -13,17 +13,17 @@ name = "ectool"
 
 [[bin]]
 name = "system76_ectool"
-required-features = ["std", "hidapi"]
+required-features = ["std", "hidapi", "clap"]
 
 [dependencies]
-clap = "2"
+clap = { version = "2", optional = true }
 libc = { version = "0.2", optional = true }
 hidapi = { version = "1.2", default-features = false, features = ["linux-static-hidraw"], optional = true }
 redox_hwio = { version = "0.1.3", optional = true }
 downcast-rs = { version = "1.2.0", default-features = false }
 
 [features]
-default = ["std", "hidapi"]
+default = ["std", "hidapi", "clap"]
 std = ["libc", "downcast-rs/std"]
 
 [package.metadata.docs.rs]