diff --git a/src/rust/engine/Cargo.toml b/src/rust/engine/Cargo.toml
index 3425b87..371399b 100644
--- a/src/rust/engine/Cargo.toml
+++ b/src/rust/engine/Cargo.toml
@@ -28,6 +28,5 @@ ignore = "0.1.8"
 lazy_static = "0.2.2"
 ordermap = "0.2.8"
 petgraph = "0.4.5"
-process_execution = { path = "process_execution" }
 tar = "0.4.13"
 tempdir = "0.3.5"
diff --git a/src/rust/engine/src/lib.rs b/src/rust/engine/src/lib.rs
index 07fc7b0..fd1d24f 100644
--- a/src/rust/engine/src/lib.rs
+++ b/src/rust/engine/src/lib.rs
@@ -26,7 +26,6 @@ extern crate ignore;
 extern crate lazy_static;
 extern crate ordermap;
 extern crate petgraph;
-extern crate process_execution;
 extern crate tar;
 extern crate tempdir;

will speed things up a bunch, while we're on a forked grpc