diff --git a/Cargo.toml b/Cargo.toml
index 8781510d..6b57144e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -33,8 +33,7 @@ serde = { version = "1.0", optional = true }
 serde_json = { version = "1.0", optional = true }
 
 [dev-dependencies]
-lazy_static = "1"
-wasm-bindgen-cli-support = { path = "crates/cli-support", version = '=0.2.11' }
+wasm-bindgen-test-project-builder = { path = "crates/test-project-builder", version = '=0.2.11' }
 
 [workspace]
 members = [
diff --git a/crates/test-project-builder/Cargo.toml b/crates/test-project-builder/Cargo.toml
new file mode 100644
index 00000000..74e51f1e
--- /dev/null
+++ b/crates/test-project-builder/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "wasm-bindgen-test-project-builder"
+version = "0.2.11"
+authors = ["Nick Fitzgerald <fitzgen@gmail.com>"]
+
+[dependencies]
+lazy_static = "1"
+wasm-bindgen-cli-support = { path = "../cli-support", version = '=0.2.11' }
diff --git a/tests/all/project_builder.rs b/crates/test-project-builder/src/lib.rs
similarity index 99%
rename from tests/all/project_builder.rs
rename to crates/test-project-builder/src/lib.rs
index 45c2f207..7528bba8 100644
--- a/tests/all/project_builder.rs
+++ b/crates/test-project-builder/src/lib.rs
@@ -1,4 +1,6 @@
-use wasm_bindgen_cli_support as cli;
+#[macro_use]
+extern crate lazy_static;
+extern crate wasm_bindgen_cli_support as cli;
 
 use std::env;
 use std::fs::{self, File};
@@ -29,7 +31,7 @@ pub struct Project {
 }
 
 pub fn project() -> Project {
-    let dir = Path::new(env!("CARGO_MANIFEST_DIR"));
+    let dir = Path::new(env!("CARGO_MANIFEST_DIR")).join("../..");
     let mut lockfile = String::new();
     fs::File::open(&dir.join("Cargo.lock"))
         .unwrap()
@@ -217,7 +219,7 @@ impl Project {
         manifest.push_str("[build-dependencies]\n");
         manifest.push_str("wasm-bindgen-webidl = { path = '");
         manifest.push_str(env!("CARGO_MANIFEST_DIR"));
-        manifest.push_str("/crates/webidl' }\n");
+        manifest.push_str("/../webidl' }\n");
 
         manifest.push_str("[dependencies]\n");
         for dep in self.deps.iter() {
@@ -226,7 +228,7 @@ impl Project {
         }
         manifest.push_str("wasm-bindgen = { path = '");
         manifest.push_str(env!("CARGO_MANIFEST_DIR"));
-        manifest.push_str("'");
+        manifest.push_str("/../..'");
         if self.no_std {
             manifest.push_str(", default-features = false");
         }
@@ -826,4 +828,3 @@ fn run_in_background(cmd: &mut Command, name: String) -> BackgroundChild {
         stdin: Some(stdin),
     }
 }
-
diff --git a/tests/all/run-headless.js b/crates/test-project-builder/src/run-headless.js
similarity index 100%
rename from tests/all/run-headless.js
rename to crates/test-project-builder/src/run-headless.js
diff --git a/tests/all/main.rs b/tests/all/main.rs
index 5d31bc22..3d06a784 100644
--- a/tests/all/main.rs
+++ b/tests/all/main.rs
@@ -1,8 +1,5 @@
-#[macro_use]
-extern crate lazy_static;
-extern crate wasm_bindgen_cli_support;
+extern crate wasm_bindgen_test_project_builder as project_builder;
 
-mod project_builder;
 use project_builder::{project, run};
 
 mod api;