diff --git a/cranelift/Cargo.toml b/cranelift/Cargo.toml
index 3edf07897d..cf3cbe5aa6 100644
--- a/cranelift/Cargo.toml
+++ b/cranelift/Cargo.toml
@@ -24,7 +24,7 @@ cretonne-faerie = { path = "lib/faerie", version = "0.8.0" }
 cretonne-simplejit = { path = "lib/simplejit", version = "0.8.0" }
 cretonne = { path = "lib/umbrella", version = "0.8.0" }
 filecheck = "0.3.0"
-docopt = "0.8.0"
+docopt = "1"
 serde = "1.0.8"
 serde_derive = "1.0.8"
 tempdir = "0.3.5"