diff --git a/Cargo.lock b/Cargo.lock
index 1e0b100d9..4d54b5102 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -129,30 +129,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "bindgen"
-version = "0.52.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1c85344eb535a31b62f0af37be84441ba9e7f0f4111eb0530f43d15e513fe57"
-dependencies = [
- "bitflags",
- "cexpr",
- "cfg-if 0.1.10",
- "clang-sys",
- "clap",
- "env_logger",
- "lazy_static",
- "lazycell",
- "log",
- "peeking_take_while",
- "proc-macro2",
- "quote",
- "regex",
- "rustc-hash",
- "shlex",
- "which 3.1.1",
-]
-
 [[package]]
 name = "bitflags"
 version = "1.2.1"
@@ -247,15 +223,6 @@ version = "1.0.62"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f1770ced377336a88a67c473594ccc14eca6f4559217c34f64aac8f83d641b40"
 
-[[package]]
-name = "cexpr"
-version = "0.3.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fce5b5fb86b0c57c20c834c1b412fd09c77c8a59b9473f86272709e78874cd1d"
-dependencies = [
- "nom 4.2.3",
-]
-
 [[package]]
 name = "cfg-if"
 version = "0.1.10"
@@ -268,17 +235,6 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
-[[package]]
-name = "clang-sys"
-version = "0.28.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "81de550971c976f176130da4b2978d3b524eaa0fd9ac31f3ceb5ae1231fb4853"
-dependencies = [
- "glob",
- "libc",
- "libloading 0.5.2",
-]
-
 [[package]]
 name = "clap"
 version = "2.33.3"
@@ -670,19 +626,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "env_logger"
-version = "0.7.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "44533bbbb3bb3c1fa17d9f2e4e38bbbaf8396ba82193c4cb1b6445d711445d36"
-dependencies = [
- "atty",
- "humantime",
- "log",
- "regex",
- "termcolor",
-]
-
 [[package]]
 name = "erased-serde"
 version = "0.3.12"
@@ -746,7 +689,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "501466ecc8a30d1d3b7fc9229b122b2ce8ed6e9d9223f1138d4babb253e51817"
 dependencies = [
  "typenum",
- "version_check 0.9.2",
+ "version_check",
 ]
 
 [[package]]
@@ -865,15 +808,6 @@ version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "644f9158b2f133fd50f5fb3242878846d9eb792e445c893805ff0e3824006e35"
 
-[[package]]
-name = "humantime"
-version = "1.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "df004cfca50ef23c36850aaaa59ad52cc70d0e90243c3c7737a4dd32dc7a3c4f"
-dependencies = [
- "quick-error",
-]
-
 [[package]]
 name = "ident_case"
 version = "1.0.1"
@@ -1004,12 +938,6 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
-[[package]]
-name = "lazycell"
-version = "1.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
-
 [[package]]
 name = "leb128"
 version = "0.2.4"
@@ -1024,9 +952,9 @@ checksum = "4d58d1b70b004888f764dfbf6a26a3b0342a1632d33968e4a179d8011c760614"
 
 [[package]]
 name = "libffi"
-version = "0.9.0"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c18efe55925cc7f83bf60a61394696a734ae90e668d1f2bbd954354416fec6f2"
+checksum = "bafef83ee22d51c27348aaf6b2da007a32b9f5004809d09271432e5ea2a795dd"
 dependencies = [
  "abort_on_panic",
  "libc",
@@ -1035,24 +963,12 @@ dependencies = [
 
 [[package]]
 name = "libffi-sys"
-version = "0.9.1"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6f00e48ce437c5741a4da3b51738498343b5158c37bfa02bcb969efcc44e4e06"
+checksum = "3b6d65142f1c3b06ca3f4216da4d32b3124d14d932cef8dfd8792037acd2160b"
 dependencies = [
- "bindgen",
  "cc",
  "make-cmd",
- "pkg-config",
-]
-
-[[package]]
-name = "libloading"
-version = "0.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f2b111a074963af1d37a139918ac6d49ad1d0d5e47f72fd55388619691a7d753"
-dependencies = [
- "cc",
- "winapi",
 ]
 
 [[package]]
@@ -1190,16 +1106,6 @@ dependencies = [
  "void",
 ]
 
-[[package]]
-name = "nom"
-version = "4.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2ad2a91a8e869eeb30b9cb3119ae87773a8f4ae617f41b1eb9c154b2905f7bd6"
-dependencies = [
- "memchr",
- "version_check 0.1.5",
-]
-
 [[package]]
 name = "nom"
 version = "5.1.2"
@@ -1207,7 +1113,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ffb4262d26ed83a1c0a33a38fe2bb15797329c85770da05e6b828ddb782627af"
 dependencies = [
  "memchr",
- "version_check 0.9.2",
+ "version_check",
 ]
 
 [[package]]
@@ -1350,12 +1256,6 @@ dependencies = [
  "proc-macro-hack",
 ]
 
-[[package]]
-name = "peeking_take_while"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "19b17cddbe7ec3f8bc800887bab5e717348c95ea2ca0b1bf0837fb964dc67099"
-
 [[package]]
 name = "pest"
 version = "2.1.3"
@@ -1440,7 +1340,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "syn",
- "version_check 0.9.2",
+ "version_check",
 ]
 
 [[package]]
@@ -1451,7 +1351,7 @@ checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
 dependencies = [
  "proc-macro2",
  "quote",
- "version_check 0.9.2",
+ "version_check",
 ]
 
 [[package]]
@@ -1469,12 +1369,6 @@ dependencies = [
  "unicode-xid",
 ]
 
-[[package]]
-name = "quick-error"
-version = "1.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
-
 [[package]]
 name = "quote"
 version = "1.0.7"
@@ -1934,12 +1828,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "shlex"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7fdf1b9db47230893d76faad238fd6097fd6d6a9245cd7a4d90dbd639536bbd2"
-
 [[package]]
 name = "smallvec"
 version = "1.4.2"
@@ -2025,15 +1913,6 @@ dependencies = [
  "winapi",
 ]
 
-[[package]]
-name = "termcolor"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb6bfa289a4d7c5766392812c0a1f4c1ba45afa1ad47803c11e1f407d846d75f"
-dependencies = [
- "winapi-util",
-]
-
 [[package]]
 name = "test-generator"
 version = "0.1.0"
@@ -2209,12 +2088,6 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
 
-[[package]]
-name = "version_check"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
-
 [[package]]
 name = "version_check"
 version = "0.9.2"
@@ -2553,7 +2426,7 @@ dependencies = [
  "bincode",
  "cfg-if 0.1.10",
  "leb128",
- "libloading 0.6.5",
+ "libloading",
  "serde",
  "tempfile",
  "tracing",
@@ -2562,7 +2435,7 @@ dependencies = [
  "wasmer-object",
  "wasmer-types",
  "wasmer-vm",
- "which 4.0.2",
+ "which",
 ]
 
 [[package]]
@@ -2572,7 +2445,7 @@ dependencies = [
  "bincode",
  "cfg-if 0.1.10",
  "leb128",
- "libloading 0.6.5",
+ "libloading",
  "serde",
  "tempfile",
  "tracing",
@@ -2814,15 +2687,6 @@ dependencies = [
  "wasm-bindgen",
 ]
 
-[[package]]
-name = "which"
-version = "3.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d011071ae14a2f6671d0b74080ae0cd8ebf3a6f8c9589a2cd45f23126fe29724"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "which"
 version = "4.0.2"
@@ -2882,7 +2746,7 @@ version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d3a481cfdefd35e1c50073ae33a8000d695c98039544659f5dc5dd71311b0d01"
 dependencies = [
- "nom 5.1.2",
+ "nom",
 ]
 
 [[package]]
diff --git a/lib/c-api/Cargo.toml b/lib/c-api/Cargo.toml
index b3d904c8c..b355db449 100644
--- a/lib/c-api/Cargo.toml
+++ b/lib/c-api/Cargo.toml
@@ -30,7 +30,7 @@ wasmer-types = { version = "1.0.0-alpha5", path = "../wasmer-types" }
 cfg-if = "1.0"
 lazy_static = "1"
 libc = { version = "^0.2", default-features = false }
-libffi = { version = "0.9", optional = true }
+libffi = { version = "1.0", optional = true }
 serde = { version = "1", optional = true, features = ["derive"] }
 thiserror = "1"
 typetag = { version = "0.1", optional = true }