diff --git a/Cargo.toml b/Cargo.toml
index ba37125e80..7ceaed9777 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,6 +16,7 @@ num-complex = { version = "0.3", features = ["serde"] }
 num-traits = "0.2"
 log = "0.4"
 arrayvec = "0.5"
+ahash = "0.6"
 
 [dev-dependencies]
 rustpython-parser = { path = "../parser" }