diff --git a/Cargo.lock b/Cargo.lock
index 44989c92c..fd9d466d3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -198,12 +198,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cid"
-version = "0.2.0"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
+ "integer-encoding 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "multibase 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "multihash 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "varmint 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1039,6 +1039,11 @@ dependencies = [
  "xmltree 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "integer-encoding"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "ipc-common-types"
 version = "1.6.0"
@@ -1627,7 +1632,7 @@ dependencies = [
 name = "parity-ipfs-api"
 version = "1.6.0"
 dependencies = [
- "cid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cid 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore 1.6.0",
  "ethcore-util 1.6.0",
  "hyper 0.10.0-a.0 (git+https://github.com/ethcore/hyper)",
@@ -2441,11 +2446,6 @@ name = "utf8-ranges"
 version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "varmint"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "vecio"
 version = "0.1.0"
@@ -2558,7 +2558,7 @@ dependencies = [
 "checksum bytes 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c129aff112dcc562970abb69e2508b40850dd24c274761bb50fb8a0067ba6c27"
 "checksum bytes 0.4.0-dev (git+https://github.com/carllerche/bytes)" = "<none>"
 "checksum cfg-if 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "de1e760d7b6535af4241fca8bd8adf68e2e7edacc6b29f5d399050c5e48cf88c"
-"checksum cid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c0ad0fdcfbfdfa789a0cf941dd19f7f1d3a377522f6e4c2a760d246ac56b4780"
+"checksum cid 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e53e6cdfa5ca294863e8c8a32a7cdb4dc0a442c8971d47a0e75b6c27ea268a6a"
 "checksum clippy 0.0.103 (registry+https://github.com/rust-lang/crates.io-index)" = "5b4fabf979ddf6419a313c1c0ada4a5b95cfd2049c56e8418d622d27b4b6ff32"
 "checksum clippy_lints 0.0.103 (registry+https://github.com/rust-lang/crates.io-index)" = "ce96ec05bfe018a0d5d43da115e54850ea2217981ff0f2e462780ab9d594651a"
 "checksum cookie 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "90266f45846f14a1e986c77d1e9c2626b8c342ed806fe60241ec38cc8697b245"
@@ -2595,6 +2595,7 @@ dependencies = [
 "checksum hyper-native-tls 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "afe68f772f0497a7205e751626bb8e1718568b58534b6108c73a74ef80483409"
 "checksum idna 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1053236e00ce4f668aeca4a769a09b3bf5a682d802abd6f3cb39374f6b162c11"
 "checksum igd 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c8c12b1795b8b168f577c45fa10379b3814dcb11b7ab702406001f0d63f40484"
+"checksum integer-encoding 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a053c9c7dcb7db1f2aa012c37dc176c62e4cdf14898dee0eecc606de835b8acb"
 "checksum isatty 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7408a548dc0e406b7912d9f84c261cc533c1866e047644a811c133c56041ac0c"
 "checksum itertools 0.5.9 (registry+https://github.com/rust-lang/crates.io-index)" = "d95557e7ba6b71377b0f2c3b3ae96c53f1b75a926a6901a500f557a370af730a"
 "checksum itoa 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "91fd9dc2c587067de817fec4ad355e3818c3d893a78cab32a0a474c7a15bb8d5"
@@ -2744,7 +2745,6 @@ dependencies = [
 "checksum url 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "afe9ec54bc4db14bc8744b7fed060d785ac756791450959b2248443319d5b119"
 "checksum user32-sys 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4ef4711d107b21b410a3a974b1204d9accc8b10dad75d8324b5d755de1617d47"
 "checksum utf8-ranges 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a1ca13c08c41c9c3e04224ed9ff80461d97e121589ff27c753a16cb10830ae0f"
-"checksum varmint 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "5211976e8f86adc9920dd7621777bf8974c7812e48eb2aeb97fb1c26cd55ae84"
 "checksum vecio 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0795a11576d29ae80525a3fda315bf7b534f8feb9d34101e5fe63fb95bb2fd24"
 "checksum vergen 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "56b639f935488eb40f06d17c3e3bcc3054f6f75d264e187b1107c8d1cba8d31c"
 "checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
diff --git a/ipfs/Cargo.toml b/ipfs/Cargo.toml
index d7698ac74..7cc381ee8 100644
--- a/ipfs/Cargo.toml
+++ b/ipfs/Cargo.toml
@@ -11,5 +11,5 @@ ethcore-util = { path = "../util" }
 rlp = { path = "../util/rlp" }
 mime = "0.2"
 hyper = { default-features = false, git = "https://github.com/ethcore/hyper" }
-cid = "0.2"
+cid = "0.2.1"
 multihash = "0.5"