diff --git a/Cargo.lock b/Cargo.lock
index 5b6901e..e7510fd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -32,17 +32,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "arca"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f915ddd863ef73f11c10c75170e86db1d4f539689bc6bfb9ce25d6528d6fe83"
-dependencies = [
- "clean-path",
- "path-slash",
- "radix_trie",
-]
-
 [[package]]
 name = "autocfg"
 version = "1.3.0"
@@ -520,7 +509,6 @@ checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 name = "pnp"
 version = "0.9.4"
 dependencies = [
- "arca",
  "byteorder",
  "clean-path",
  "concurrent_lru",
diff --git a/Cargo.toml b/Cargo.toml
index 0302f8e..61302de 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,7 +8,6 @@ homepage = "https://yarnpkg.com"
 repository = "https://github.com/yarnpkg/pnp-rs"
 
 [dependencies]
-arca = "^0.7"
 byteorder = "1"
 clean-path = "0.2.1"
 concurrent_lru = "^0.2"