diff --git a/Cargo.toml b/Cargo.toml
index bf7d18a59..0f52c1aac 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,6 +7,14 @@ license = "MIT"
 version = "0.7.0"
 authors = ["Wilfred Hughes <me@wilfred.me.uk>"]
 edition = "2018"
+include = [
+        "build.rs",
+        "src/",
+        "vendor/**/*.c",
+        "vendor/**/*.h",
+        "vendor/**/*.cc",
+        "README.md",
+]
 
 [dependencies]
 regex = "1"
diff --git a/README.md b/README.md
index 610b48e44..79c981788 100644
--- a/README.md
+++ b/README.md
@@ -98,9 +98,15 @@ Add the tree-sitter-FOO git repository as a subtree.
 
 ```
 $ git subtree add --prefix=vendor/tree-sitter-elisp git@github.com:Wilfred/tree-sitter-elisp.git main
-
 ```
 
+Add a symlink to the C source directory (Cargo will not include the
+parent directory when packaging, because the parent has a `Cargo.toml`).
+
+```
+$ cd vendor
+$ ln -s tree-sitter-elisp/src tree-sitter-elisp-src
+```
 Update `build.rs` and `tree_sitter_parser.rs` to include the
 definitions for the new parser.
 
diff --git a/build.rs b/build.rs
index ee39b34ca..00bf3dc08 100644
--- a/build.rs
+++ b/build.rs
@@ -35,33 +35,33 @@ fn main() {
     // Only rerun if files in the vendor/ directory change.
     println!("cargo:rerun-if-changed=vendor");
 
-    build("tree-sitter-clojure", "vendor/tree-sitter-clojure/src", &[]);
+    build("tree-sitter-clojure", "vendor/tree-sitter-clojure-src", &[]);
     build(
         "tree-sitter-css",
-        "vendor/tree-sitter-css/src",
+        "vendor/tree-sitter-css-src",
         &["scanner.c"],
     );
-    build("tree-sitter-elisp", "vendor/tree-sitter-elisp/src", &[]);
-    build("tree-sitter-go", "vendor/tree-sitter-go/src", &[]);
+    build("tree-sitter-elisp", "vendor/tree-sitter-elisp-src", &[]);
+    build("tree-sitter-go", "vendor/tree-sitter-go-src", &[]);
     build(
         "tree-sitter-javascript",
-        "vendor/tree-sitter-javascript/src",
+        "vendor/tree-sitter-javascript-src",
         &["scanner.c"],
     );
-    build("tree-sitter-json", "vendor/tree-sitter-json/src", &[]);
+    build("tree-sitter-json", "vendor/tree-sitter-json-src", &[]);
     build(
         "tree-sitter-ocaml",
-        "vendor/tree-sitter-ocaml/ocaml/src",
+        "vendor/tree-sitter-ocaml-src/ocaml/src",
         &["scanner.cc"],
     );
     build(
         "tree-sitter-ocaml-interface",
-        "vendor/tree-sitter-ocaml/interface/src",
+        "vendor/tree-sitter-ocaml-src/interface/src",
         &["scanner.cc"],
     );
     build(
         "tree-sitter-rust",
-        "vendor/tree-sitter-rust/src",
+        "vendor/tree-sitter-rust-src",
         &["scanner.c"],
     );
 }
diff --git a/vendor/tree-sitter-clojure-src b/vendor/tree-sitter-clojure-src
new file mode 120000
index 000000000..c99fb6866
--- /dev/null
+++ b/vendor/tree-sitter-clojure-src
@@ -0,0 +1 @@
+tree-sitter-clojure/src
\ No newline at end of file
diff --git a/vendor/tree-sitter-css-src b/vendor/tree-sitter-css-src
new file mode 120000
index 000000000..d806fc9a4
--- /dev/null
+++ b/vendor/tree-sitter-css-src
@@ -0,0 +1 @@
+tree-sitter-css/src
\ No newline at end of file
diff --git a/vendor/tree-sitter-elisp-src b/vendor/tree-sitter-elisp-src
new file mode 120000
index 000000000..567eff138
--- /dev/null
+++ b/vendor/tree-sitter-elisp-src
@@ -0,0 +1 @@
+tree-sitter-elisp/src
\ No newline at end of file
diff --git a/vendor/tree-sitter-go-src b/vendor/tree-sitter-go-src
new file mode 120000
index 000000000..0b8bd2f7a
--- /dev/null
+++ b/vendor/tree-sitter-go-src
@@ -0,0 +1 @@
+tree-sitter-go/src
\ No newline at end of file
diff --git a/vendor/tree-sitter-javascript-src b/vendor/tree-sitter-javascript-src
new file mode 120000
index 000000000..2e9407953
--- /dev/null
+++ b/vendor/tree-sitter-javascript-src
@@ -0,0 +1 @@
+tree-sitter-javascript/src
\ No newline at end of file
diff --git a/vendor/tree-sitter-json-src b/vendor/tree-sitter-json-src
new file mode 120000
index 000000000..4f9ada837
--- /dev/null
+++ b/vendor/tree-sitter-json-src
@@ -0,0 +1 @@
+tree-sitter-json/src
\ No newline at end of file
diff --git a/vendor/tree-sitter-ocaml-src/common b/vendor/tree-sitter-ocaml-src/common
new file mode 120000
index 000000000..801894d31
--- /dev/null
+++ b/vendor/tree-sitter-ocaml-src/common
@@ -0,0 +1 @@
+../tree-sitter-ocaml/common
\ No newline at end of file
diff --git a/vendor/tree-sitter-ocaml-src/interface b/vendor/tree-sitter-ocaml-src/interface
new file mode 120000
index 000000000..3f655083f
--- /dev/null
+++ b/vendor/tree-sitter-ocaml-src/interface
@@ -0,0 +1 @@
+../tree-sitter-ocaml/interface
\ No newline at end of file
diff --git a/vendor/tree-sitter-ocaml-src/ocaml b/vendor/tree-sitter-ocaml-src/ocaml
new file mode 120000
index 000000000..7894f6c8e
--- /dev/null
+++ b/vendor/tree-sitter-ocaml-src/ocaml
@@ -0,0 +1 @@
+../tree-sitter-ocaml/ocaml
\ No newline at end of file
diff --git a/vendor/tree-sitter-rust-src b/vendor/tree-sitter-rust-src
new file mode 120000
index 000000000..921b2cc1e
--- /dev/null
+++ b/vendor/tree-sitter-rust-src
@@ -0,0 +1 @@
+tree-sitter-rust/src
\ No newline at end of file