diff --git a/rust/Cargo.lock b/rust/Cargo.lock
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "adler"
 version = "0.2.3"
@@ -157,9 +159,9 @@
 
 [[package]]
 name = "cpython"
-version = "0.6.0"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8094679a4e9bfc8035572162624bc800eda35b5f9eff2537b9cd9aacc3d9782e"
+checksum = "b7d46ba8ace7f3a1d204ac5060a706d0a68de6b42eafb6a586cc08bebcffe664"
 dependencies = [
  "libc",
  "num-traits",
@@ -652,9 +654,9 @@
 
 [[package]]
 name = "python27-sys"
-version = "0.6.0"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5826ddbc5366eb0b0492040fdc25bf50bb49092c192bd45e80fb7a24dc6832ab"
+checksum = "94670354e264300dde81a5864cbb6bfc9d56ac3dcf3a278c32cb52f816f4dfd1"
 dependencies = [
  "libc",
  "regex",
@@ -662,9 +664,9 @@
 
 [[package]]
 name = "python3-sys"
-version = "0.6.0"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b78af21b29594951a47fc3dac9b9eff0a3f077dec2f780ee943ae16a668f3b6a"
+checksum = "b18b32e64c103d5045f44644d7ddddd65336f7a0521f6fde673240a9ecceb77e"
 dependencies = [
  "libc",
  "regex",
diff --git a/rust/hg-cpython/Cargo.toml b/rust/hg-cpython/Cargo.toml
--- a/rust/hg-cpython/Cargo.toml
+++ b/rust/hg-cpython/Cargo.toml
@@ -21,13 +21,10 @@
 python3-bin = ["cpython/python3-sys"]
 
 [dependencies]
+cpython = { version = "0.7.0", default-features = false }
 crossbeam-channel = "0.4"
 hg-core = { path = "../hg-core"}
 libc = '*'
 log = "0.4.8"
 env_logger = "0.7.1"
 stable_deref_trait = "1.2.0"
-
-[dependencies.cpython]
-version = "0.6.0"
-default-features = false