--- a/rust/hg-cpython/Cargo.toml	Mon Sep 06 13:39:54 2021 +0200
+++ b/rust/hg-cpython/Cargo.toml	Thu Sep 09 18:07:40 2021 +0200
@@ -26,6 +26,7 @@
 libc = '*'
 log = "0.4.8"
 env_logger = "0.7.1"
+stable_deref_trait = "1.2.0"
 
 [dependencies.cpython]
 version = "0.6.0"