diff --git a/Cargo.lock b/Cargo.lock
index 0c20f02be..fa4d72b53 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -219,7 +219,7 @@ dependencies = [
  "serde 1.0.92 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.92 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.36 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.37 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempfile 3.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "toml 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -449,7 +449,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.36 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.37 (registry+https://github.com/rust-lang/crates.io-index)",
  "synstructure 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -706,7 +706,7 @@ dependencies = [
  "proc-macro-hack 0.5.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.36 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.37 (registry+https://github.com/rust-lang/crates.io-index)",
  "unindent 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1083,7 +1083,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.36 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.37 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1108,7 +1108,7 @@ dependencies = [
 
 [[package]]
 name = "pyo3-pack"
-version = "0.7.0"
+version = "0.7.0-beta.1"
 dependencies = [
  "base64 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "cargo_metadata 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1425,7 +1425,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.36 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.37 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1500,7 +1500,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.36 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.37 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1595,7 +1595,7 @@ dependencies = [
  "heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.36 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.37 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1605,7 +1605,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "syn"
-version = "0.15.36"
+version = "0.15.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1620,7 +1620,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.36 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.37 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2295,7 +2295,7 @@ dependencies = [
 "checksum structopt 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)" = "fa19a5a708e22bb5be31c1b6108a2a902f909c4b9ba85cba44c06632386bc0ff"
 "checksum structopt-derive 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)" = "c6d59d0ae8ef8de16e49e3ca7afa16024a3e0dfd974a75ef93fdc5464e34523f"
 "checksum subtle 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2d67a5a62ba6e01cb2192ff309324cb4875d0c451d55fe2319433abe7a05a8ee"
-"checksum syn 0.15.36 (registry+https://github.com/rust-lang/crates.io-index)" = "8b4f551a91e2e3848aeef8751d0d4eec9489b6474c720fd4c55958d8d31a430c"
+"checksum syn 0.15.37 (registry+https://github.com/rust-lang/crates.io-index)" = "e11410033fd5cf69a1cf2084604e011190c56f11e08ffc53df880f5f65f1c6e4"
 "checksum synstructure 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)" = "02353edf96d6e4dc81aea2d8490a7e9db177bf8acb0e951c24940bf866cb313f"
 "checksum tar 0.4.26 (registry+https://github.com/rust-lang/crates.io-index)" = "b3196bfbffbba3e57481b6ea32249fbaf590396a52505a2615adbb79d9d826d3"
 "checksum target_info 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c63f48baada5c52e65a29eef93ab4f8982681b67f9e8d29c7b05abcfec2b9ffe"
diff --git a/Cargo.toml b/Cargo.toml
index e625781a4..74978d744 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 authors = ["konstin <konstin@mailbox.org>"]
 name = "pyo3-pack"
-version = "0.7.0"
+version = "0.7.0-beta.1"
 description = "Build and publish crates with pyo3, rust-cpython and cffi bindings as well as rust binaries as python packages"
 exclude = ["test-crates/**/*", "integration-test/**/*", "sysconfig/*", "test-data/*"]
 readme = "Readme.md"
diff --git a/test-crates/cffi-mixed/Cargo.lock b/test-crates/cffi-mixed/Cargo.lock
index b7c7cc861..ffcf78db8 100644
--- a/test-crates/cffi-mixed/Cargo.lock
+++ b/test-crates/cffi-mixed/Cargo.lock
@@ -1,4 +1,6 @@
-[root]
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
 name = "cffi-mixed"
 version = "0.1.0"