diff --git a/Cargo.lock b/Cargo.lock
index 2650e1a5..e3eaef80 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -60,9 +60,9 @@ checksum = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"
 
 [[package]]
 name = "backtrace"
-version = "0.3.45"
+version = "0.3.46"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ad235dabf00f36301792cfe82499880ba54c6486be094d1047b02bacb67c14e8"
+checksum = "b1e692897359247cc6bb902933361652380af0f1b7651ae5c5013407f30e109e"
 dependencies = [
  "backtrace-sys",
  "cfg-if",
@@ -72,9 +72,9 @@ dependencies = [
 
 [[package]]
 name = "backtrace-sys"
-version = "0.1.33"
+version = "0.1.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e17b52e737c40a7d75abca20b29a19a0eb7ba9fc72c5a72dd282a0a3c2c0dc35"
+checksum = "7de8aba10a69c8e8d7622c5710229485ec32e9d55fdad160ea559c086fdcd118"
 dependencies = [
  "cc",
  "libc",
@@ -82,33 +82,15 @@ dependencies = [
 
 [[package]]
 name = "bellman_ce"
-version = "0.3.1"
-source = "git+https://github.com/matter-labs/bellman?rev=9e35737#9e35737209d4afc2e69af1e0d7cbe6d02e32aecf"
-dependencies = [
- "bit-vec",
- "byteorder",
- "cfg-if",
- "crossbeam",
- "futures",
- "futures-cpupool",
- "num_cpus",
- "pairing_ce",
- "rand 0.4.6",
- "web-sys",
-]
-
-[[package]]
-name = "bellman_ce"
-version = "0.3.1"
+version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "938ec0feff00f9dfda0e7cbfe8db8b717966a84f6a12e63ed0943c4a90d6a5de"
+checksum = "0300152b8d0c0220c70a39d6da08adff84352f5dd28d91944bc60e9dc8cbebb9"
 dependencies = [
  "bit-vec",
  "byteorder",
  "cfg-if",
  "crossbeam",
  "futures",
- "futures-cpupool",
  "num_cpus",
  "pairing_ce",
  "rand 0.4.6",
@@ -128,9 +110,9 @@ dependencies = [
 
 [[package]]
 name = "bit-vec"
-version = "0.4.4"
+version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02b4ff8b16e6076c3e14220b39fbc1fabb6737522281a388998046859400895f"
+checksum = "a4523a10839ffae575fb08aa3423026c8cb4687eef43952afb956229d4f246f7"
 
 [[package]]
 name = "bitflags"
@@ -172,9 +154,9 @@ dependencies = [
 
 [[package]]
 name = "bstr"
-version = "0.2.11"
+version = "0.2.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "502ae1441a0a5adb8fbd38a5955a6416b9493e92b465de5e4a9bde6a539c2c48"
+checksum = "2889e6d50f394968c8bf4240dc3f2a7eb4680844d27308f798229ac9d4725f41"
 dependencies = [
  "lazy_static",
  "memchr",
@@ -184,9 +166,9 @@ dependencies = [
 
 [[package]]
 name = "bumpalo"
-version = "3.2.0"
+version = "3.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1f359dc14ff8911330a51ef78022d376f25ed00248912803b58f00cb1c27f742"
+checksum = "12ae9db68ad7fac5fe51304d20f016c911539251075a214f8e663babefa35187"
 
 [[package]]
 name = "byte-tools"
@@ -206,15 +188,6 @@ version = "1.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
 
-[[package]]
-name = "c2-chacha"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "214238caa1bf3a496ec3392968969cab8549f96ff30652c9e56885329315f6bb"
-dependencies = [
- "ppv-lite86",
-]
-
 [[package]]
 name = "cargo_metadata"
 version = "0.6.4"
@@ -395,9 +368,9 @@ dependencies = [
 
 [[package]]
 name = "curl-sys"
-version = "0.4.28+curl-7.69.0"
+version = "0.4.30+curl-7.69.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2c6b7fa5d36aa192e410788b77af65f339af24c8786419e8b48173689a484bf"
+checksum = "923b38e423a8f47a4058e96f2a1fa2865a6231097ee860debd678d244277d50c"
 dependencies = [
  "cc",
  "libc",
@@ -456,9 +429,9 @@ dependencies = [
 
 [[package]]
 name = "failure"
-version = "0.1.6"
+version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f8273f13c977665c5db7eb2b99ae520952fe5ac831ae4cd09d80c4c7042b5ed9"
+checksum = "b8529c2421efa3066a5cbd8063d2244603824daccb6936b079010bb2aa89464b"
 dependencies = [
  "backtrace",
  "failure_derive",
@@ -466,13 +439,13 @@ dependencies = [
 
 [[package]]
 name = "failure_derive"
-version = "0.1.6"
+version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0bc225b78e0391e4b8683440bf2e63c2deeeb2ce5189eab46e2b68c6d3725d08"
+checksum = "030a733c8287d6213886dd487564ff5c8f6aae10278b3588ed177f9d18f8d231"
 dependencies = [
- "proc-macro2 1.0.9",
- "quote 1.0.2",
- "syn 1.0.16",
+ "proc-macro2 1.0.10",
+ "quote 1.0.3",
+ "syn 1.0.17",
  "synstructure",
 ]
 
@@ -484,9 +457,9 @@ checksum = "e88a8acf291dafb59c2d96e8f59828f3838bb1a70398823ade51a84de6a6deed"
 
 [[package]]
 name = "ff_ce"
-version = "0.7.1"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "18af1ea1b80a4b474fae13af4c58cf0a5a2bc33832d5fa70f68a4b286178fdb5"
+checksum = "83c0a6a2c53b0bd6d8cae976816dc8a171e0554c03f304e3dac110473e0219fd"
 dependencies = [
  "byteorder",
  "ff_derive_ce",
@@ -496,16 +469,16 @@ dependencies = [
 
 [[package]]
 name = "ff_derive_ce"
-version = "0.5.1"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d245b4e76c5b36bb7721ea15b7fbc61bebf0c5d2890eaf49fe1e2a3eed36db9"
+checksum = "7543567f0c51910363eb5706ee2f5368a64e79a8ae607d0332aa60bae03a1bb1"
 dependencies = [
  "num-bigint 0.2.6",
  "num-integer",
  "num-traits 0.2.11",
- "proc-macro2 0.4.30",
- "quote 0.6.13",
- "syn 0.14.9",
+ "proc-macro2 1.0.10",
+ "quote 1.0.3",
+ "syn 1.0.17",
 ]
 
 [[package]]
@@ -532,20 +505,81 @@ checksum = "a06f77d526c1a601b7c4cdd98f54b5eaabffc14d5f2f0296febdc7f357c6d3ba"
 
 [[package]]
 name = "futures"
-version = "0.1.29"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b980f2816d6ee8673b6517b52cb0e808a180efc92e5c19d02cdda79066703ef"
+checksum = "5c329ae8753502fb44ae4fc2b622fa2a94652c41e795143765ba0927f92ab780"
+dependencies = [
+ "futures-channel",
+ "futures-core",
+ "futures-executor",
+ "futures-io",
+ "futures-sink",
+ "futures-task",
+ "futures-util",
+]
 
 [[package]]
-name = "futures-cpupool"
-version = "0.1.8"
+name = "futures-channel"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab90cde24b3319636588d0c35fe03b1333857621051837ed769faefb4c2162e4"
+checksum = "f0c77d04ce8edd9cb903932b608268b3fffec4163dc053b3b402bf47eac1f1a8"
 dependencies = [
- "futures",
+ "futures-core",
+ "futures-sink",
+]
+
+[[package]]
+name = "futures-core"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f25592f769825e89b92358db00d26f965761e094951ac44d3663ef25b7ac464a"
+
+[[package]]
+name = "futures-executor"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f674f3e1bcb15b37284a90cedf55afdba482ab061c407a9c0ebbd0f3109741ba"
+dependencies = [
+ "futures-core",
+ "futures-task",
+ "futures-util",
  "num_cpus",
 ]
 
+[[package]]
+name = "futures-io"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a638959aa96152c7a4cddf50fcb1e3fede0583b27157c26e67d6f99904090dc6"
+
+[[package]]
+name = "futures-sink"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3466821b4bc114d95b087b850a724c6f83115e929bc88f1fa98a3304a944c8a6"
+
+[[package]]
+name = "futures-task"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7b0a34e53cf6cdcd0178aa573aed466b646eb3db769570841fda0c7ede375a27"
+
+[[package]]
+name = "futures-util"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "22766cf25d64306bedf0384da004d05c9974ab104fcc4528f1236181c18004c5"
+dependencies = [
+ "futures-channel",
+ "futures-core",
+ "futures-io",
+ "futures-sink",
+ "futures-task",
+ "memchr",
+ "pin-utils",
+ "slab",
+]
+
 [[package]]
 name = "generic-array"
 version = "0.12.3"
@@ -595,18 +629,18 @@ checksum = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"
 
 [[package]]
 name = "hermit-abi"
-version = "0.1.8"
+version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1010591b26bbfe835e9faeabeb11866061cc7dcebffd56ad7d0942d0e61aefd8"
+checksum = "725cf19794cf90aa94e65050cb4191ff5d8fa87a498383774c47b332e3af952e"
 dependencies = [
  "libc",
 ]
 
 [[package]]
 name = "hex"
-version = "0.3.2"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "805026a5d0141ffc30abb3be3173848ad46a1b1664fe632428479619a3644d77"
+checksum = "644f9158b2f133fd50f5fb3242878846d9eb792e445c893805ff0e3824006e35"
 
 [[package]]
 name = "idna"
@@ -645,9 +679,9 @@ dependencies = [
 
 [[package]]
 name = "js-sys"
-version = "0.3.36"
+version = "0.3.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1cb931d43e71f560c81badb0191596562bafad2be06a3f9025b845c847c60df5"
+checksum = "6a27d435371a2fa5b6d2b028a74bbdb1234f308da363226a2854ca3ff8ba7055"
 dependencies = [
  "wasm-bindgen",
 ]
@@ -660,9 +694,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.67"
+version = "0.2.68"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eb147597cdf94ed43ab7a9038716637d2d1bf2bc571da995d0028dec06bd3018"
+checksum = "dea0c0405123bba743ee3f91f49b1c7cfb684eef0da0a50110f758ccf24cdff0"
 
 [[package]]
 name = "libgit2-sys"
@@ -740,11 +774,11 @@ checksum = "3728d817d99e5ac407411fa471ff9800a778d88a24685968b36824eaf4bee400"
 
 [[package]]
 name = "memoffset"
-version = "0.5.3"
+version = "0.5.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "75189eb85871ea5c2e2c15abbdd541185f63b408415e5051f5cac122d8c774b9"
+checksum = "b4fc2c02a7e374099d4ee95a193111f72d2110197fe200272371758f6c3643d8"
 dependencies = [
- "rustc_version",
+ "autocfg",
 ]
 
 [[package]]
@@ -862,9 +896,9 @@ dependencies = [
 
 [[package]]
 name = "pairing_ce"
-version = "0.18.0"
+version = "0.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f075a9c570e2026111cb6dddf6a320e5163c42aa32500b315ec34acbcf7c9b36"
+checksum = "6c7b23aa7f0489d9a5e8e15cc5b7cb4f3e9b9d64812b8875fb91d25b640b0939"
 dependencies = [
  "byteorder",
  "ff_ce",
@@ -911,15 +945,15 @@ dependencies = [
 
 [[package]]
 name = "pest_generator"
-version = "2.1.2"
+version = "2.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "27e5277315f6b4f27e0e6744feb5d5ba1891e7164871033d3c8344c6783b349a"
+checksum = "99b8db626e31e5b81787b9783425769681b347011cc59471e33ea46d2ea0cf55"
 dependencies = [
  "pest",
  "pest_meta",
- "proc-macro2 1.0.9",
- "quote 1.0.2",
- "syn 1.0.16",
+ "proc-macro2 1.0.10",
+ "quote 1.0.3",
+ "syn 1.0.17",
 ]
 
 [[package]]
@@ -933,6 +967,12 @@ dependencies = [
  "sha-1",
 ]
 
+[[package]]
+name = "pin-utils"
+version = "0.1.0-alpha.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5894c618ce612a3fa23881b152b608bafb8c56cfc22f434a3ba3120b40f7b587"
+
 [[package]]
 name = "pkg-config"
 version = "0.3.17"
@@ -956,9 +996,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.9"
+version = "1.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c09721c6781493a2a492a96b5a5bf19b65917fe6728884e7c44dd0c60ca3435"
+checksum = "df246d292ff63439fea9bc8c0a270bed0e390d5ebd4db4ba15aba81111b5abe3"
 dependencies = [
  "unicode-xid 0.2.0",
 ]
@@ -983,11 +1023,11 @@ dependencies = [
 
 [[package]]
 name = "quote"
-version = "1.0.2"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "053a8c8bcc71fcce321828dc897a98ab9760bef03a4fc36693c231e5b3216cfe"
+checksum = "2bdc6c187c65bca4260c9011c9e3132efe4909da44726bad24cf7572ae338d7f"
 dependencies = [
- "proc-macro2 1.0.9",
+ "proc-macro2 1.0.10",
 ]
 
 [[package]]
@@ -1018,11 +1058,11 @@ dependencies = [
 
 [[package]]
 name = "rand_chacha"
-version = "0.2.1"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "03a2a90da8c7523f554344f921aa97283eadf6ac484a6d2a7d0212fa7f8d6853"
+checksum = "f4c8ed856279c9737206bf725bf36935d8666ead7aa69b52be55af369d193402"
 dependencies = [
- "c2-chacha",
+ "ppv-lite86",
  "rand_core 0.5.1",
 ]
 
@@ -1095,9 +1135,9 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.1.8"
+version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "92b73c2a1770c255c240eaa4ee600df1704a38dc3feaa6e949e7fcd4f8dc09f9"
+checksum = "ae1ded71d66a4a97f5e961fd0cb25a5f366a42a41570d16a763a69c092c26ae4"
 dependencies = [
  "byteorder",
 ]
@@ -1126,20 +1166,11 @@ version = "0.1.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4c691c0e608126e00913e33f0ccf3727d5fc84573623b8d65b2df340b5201783"
 
-[[package]]
-name = "rustc_version"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
-dependencies = [
- "semver",
-]
-
 [[package]]
 name = "ryu"
-version = "1.0.2"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bfa8506c1de11c9c4e4c38863ccbe02a305c8188e85a05a784c9e11e1c3910c8"
+checksum = "535622e6be132bccd223f4bb2b8ac8d53cda3c7a6394944d3b2b33fb974f9d76"
 
 [[package]]
 name = "same-file"
@@ -1156,7 +1187,7 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ec318b68765114e578fe42446b6861565b302bc93089aa01669d19417a6de993"
 dependencies = [
- "bellman_ce 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bellman_ce",
  "blake2-rfc_bellman_edition",
  "byteorder",
  "digest",
@@ -1197,9 +1228,9 @@ checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 
 [[package]]
 name = "serde"
-version = "1.0.104"
+version = "1.0.106"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "414115f25f818d7dfccec8ee535d76949ae78584fc4f79a6f45a904bf8ab4449"
+checksum = "36df6ac6412072f67cf767ebbde4133a5b2e88e76dc6187fa7104cd16f783399"
 
 [[package]]
 name = "serde_bytes"
@@ -1212,20 +1243,20 @@ dependencies = [
 
 [[package]]
 name = "serde_derive"
-version = "1.0.104"
+version = "1.0.106"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "128f9e303a5a29922045a830221b8f78ec74a5f544944f3d5984f8ec3895ef64"
+checksum = "9e549e3abf4fb8621bd1609f11dfc9f5e50320802273b12f3811a67e6716ea6c"
 dependencies = [
- "proc-macro2 1.0.9",
- "quote 1.0.2",
- "syn 1.0.16",
+ "proc-macro2 1.0.10",
+ "quote 1.0.3",
+ "syn 1.0.17",
 ]
 
 [[package]]
 name = "serde_json"
-version = "1.0.48"
+version = "1.0.51"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9371ade75d4c2d6cb154141b9752cf3781ec9c05e0e5cf35060e1e70ee7b9c25"
+checksum = "da07b57ee2623368351e9a0488bb0b261322a15a6e0ae53e243cbdc0f4208da9"
 dependencies = [
  "itoa",
  "ryu",
@@ -1281,6 +1312,12 @@ dependencies = [
  "walkdir",
 ]
 
+[[package]]
+name = "slab"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
+
 [[package]]
 name = "smallvec"
 version = "1.2.0"
@@ -1293,17 +1330,6 @@ version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 
-[[package]]
-name = "syn"
-version = "0.14.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "261ae9ecaa397c42b960649561949d69311f08eeaea86a65696e6e46517cf741"
-dependencies = [
- "proc-macro2 0.4.30",
- "quote 0.6.13",
- "unicode-xid 0.1.0",
-]
-
 [[package]]
 name = "syn"
 version = "0.15.44"
@@ -1317,12 +1343,12 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.16"
+version = "1.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "123bd9499cfb380418d509322d7a6d52e5315f064fe4b3ad18a53d6b92c07859"
+checksum = "0df0eb663f387145cab623dea85b09c2c5b4b0aef44e945d928e682fce71bb03"
 dependencies = [
- "proc-macro2 1.0.9",
- "quote 1.0.2",
+ "proc-macro2 1.0.10",
+ "quote 1.0.3",
  "unicode-xid 0.2.0",
 ]
 
@@ -1332,9 +1358,9 @@ version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "67656ea1dc1b41b1451851562ea232ec2e5a80242139f7e679ceccfb5d61f545"
 dependencies = [
- "proc-macro2 1.0.9",
- "quote 1.0.2",
- "syn 1.0.16",
+ "proc-macro2 1.0.10",
+ "quote 1.0.3",
+ "syn 1.0.17",
  "unicode-xid 0.2.0",
 ]
 
@@ -1382,9 +1408,9 @@ dependencies = [
 
 [[package]]
 name = "tiny-keccak"
-version = "2.0.1"
+version = "2.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2953ca5148619bc99695c1274cb54c5275bbb913c6adad87e72eaf8db9787f69"
+checksum = "2c9d3793400a45f954c52e73d068316d76b6f4e36977e3fcebb13a2721e80237"
 dependencies = [
  "crunchy",
 ]
@@ -1403,15 +1429,15 @@ checksum = "6d2783fe2d6b8c1101136184eb41be8b1ad379e4657050b8aaff0c79ee7575f9"
 
 [[package]]
 name = "ucd-trie"
-version = "0.1.2"
+version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f00ed7be0c1ff1e24f46c3d2af4859f7e863672ba3a6e92e7cff702bf9f06c2"
+checksum = "56dee185309b50d1f11bfedef0fe6d036842e3fb77413abef29f8f8d1c5d4c1c"
 
 [[package]]
 name = "ucd-util"
-version = "0.1.7"
+version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5ccdc2daea7cf8bc50cd8710d170a9d816678e54943829c5082bb1594312cf8e"
+checksum = "c85f514e095d348c279b1e5cd76795082cf15bd59b93207832abe0b1d8fed236"
 
 [[package]]
 name = "unicode-bidi"
@@ -1509,9 +1535,9 @@ checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.59"
+version = "0.2.60"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3557c397ab5a8e347d434782bcd31fc1483d927a6826804cec05cc792ee2519d"
+checksum = "2cc57ce05287f8376e998cbddfb4c8cb43b84a7ec55cf4551d7c00eef317a47f"
 dependencies = [
  "cfg-if",
  "wasm-bindgen-macro",
@@ -1519,24 +1545,24 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-backend"
-version = "0.2.59"
+version = "0.2.60"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e0da9c9a19850d3af6df1cb9574970b566d617ecfaf36eb0b706b6f3ef9bd2f8"
+checksum = "d967d37bf6c16cca2973ca3af071d0a2523392e4a594548155d89a678f4237cd"
 dependencies = [
  "bumpalo",
  "lazy_static",
  "log",
- "proc-macro2 1.0.9",
- "quote 1.0.2",
- "syn 1.0.16",
+ "proc-macro2 1.0.10",
+ "quote 1.0.3",
+ "syn 1.0.17",
  "wasm-bindgen-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-futures"
-version = "0.4.9"
+version = "0.4.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "457414a91863c0ec00090dba537f88ab955d93ca6555862c29b6d860990b8a8a"
+checksum = "7add542ea1ac7fdaa9dc25e031a6af33b7d63376292bd24140c637d00d1c312a"
 dependencies = [
  "cfg-if",
  "js-sys",
@@ -1546,38 +1572,38 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.59"
+version = "0.2.60"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f6fde1d36e75a714b5fe0cffbb78978f222ea6baebb726af13c78869fdb4205"
+checksum = "8bd151b63e1ea881bb742cd20e1d6127cef28399558f3b5d415289bc41eee3a4"
 dependencies = [
- "quote 1.0.2",
+ "quote 1.0.3",
  "wasm-bindgen-macro-support",
 ]
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.59"
+version = "0.2.60"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "25bda4168030a6412ea8a047e27238cadf56f0e53516e1e83fec0a8b7c786f6d"
+checksum = "d68a5b36eef1be7868f668632863292e37739656a80fc4b9acec7b0bd35a4931"
 dependencies = [
- "proc-macro2 1.0.9",
- "quote 1.0.2",
- "syn 1.0.16",
+ "proc-macro2 1.0.10",
+ "quote 1.0.3",
+ "syn 1.0.17",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.59"
+version = "0.2.60"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc9f36ad51f25b0219a3d4d13b90eb44cd075dff8b6280cca015775d7acaddd8"
+checksum = "daf76fe7d25ac79748a37538b7daeed1c7a6867c92d3245c12c6222e4a20d639"
 
 [[package]]
 name = "wasm-bindgen-test"
-version = "0.3.9"
+version = "0.3.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "449aeba7035e4a4710cd263bbac33519fa3828bff1c6f642fa8896601e7016ad"
+checksum = "648da3460c6d2aa04b715a936329e2e311180efe650b2127d6267f4193ccac14"
 dependencies = [
  "console_error_panic_hook",
  "js-sys",
@@ -1589,19 +1615,19 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-test-macro"
-version = "0.3.9"
+version = "0.3.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "49449f8dcedc192bd0cf11b5711982decdd4dbad1029f92370e2b1215031dd59"
+checksum = "cf2f86cd78a2aa7b1fb4bb6ed854eccb7f9263089c79542dca1576a1518a8467"
 dependencies = [
- "proc-macro2 1.0.9",
- "quote 1.0.2",
+ "proc-macro2 1.0.10",
+ "quote 1.0.3",
 ]
 
 [[package]]
 name = "web-sys"
-version = "0.3.36"
+version = "0.3.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "721c6263e2c66fd44501cc5efbfa2b7dfa775d13e4ea38c46299646ed1f9c70a"
+checksum = "2d6f51648d8c56c366144378a33290049eafdd784071077f6fe37dae64c1c4cb"
 dependencies = [
  "js-sys",
  "wasm-bindgen",
@@ -1625,9 +1651,9 @@ checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
 [[package]]
 name = "winapi-util"
-version = "0.1.3"
+version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4ccfbf554c6ad11084fb7517daca16cfdcaccbdadba4fc336f032a8b12c2ad80"
+checksum = "fa515c5163a99cc82bab70fd3bfdd36d827be85de63737b40fcef2ce084a436e"
 dependencies = [
  "winapi",
 ]
@@ -1676,7 +1702,7 @@ name = "zokrates_core"
 version = "0.4.2"
 dependencies = [
  "assert_cli",
- "bellman_ce 0.3.1 (git+https://github.com/matter-labs/bellman?rev=9e35737)",
+ "bellman_ce",
  "bincode",
  "cc",
  "cmake",
@@ -1715,7 +1741,7 @@ dependencies = [
 name = "zokrates_embed"
 version = "0.1.1"
 dependencies = [
- "bellman_ce 0.3.1 (git+https://github.com/matter-labs/bellman?rev=9e35737)",
+ "bellman_ce",
  "sapling-crypto_ce",
 ]
 
diff --git a/zokrates_core/Cargo.toml b/zokrates_core/Cargo.toml
index f5b3872f..1ad7f52c 100644
--- a/zokrates_core/Cargo.toml
+++ b/zokrates_core/Cargo.toml
@@ -25,15 +25,15 @@ serde_json = "1.0"
 serde_bytes = "0.10"
 bincode = "0.8.0"
 regex = "0.2"
-pairing_ce = "0.18"
-ff_ce = "0.7"
+pairing_ce = "0.20"
+ff_ce = "0.9"
 zokrates_field = { version = "0.3.0", path = "../zokrates_field" }
 zokrates_pest_ast = { version = "0.1.0", path = "../zokrates_pest_ast" }
 zokrates_embed = { path = "../zokrates_embed" }
 zokrates_common = { path = "../zokrates_common" }
 rand = "0.4"
 csv = "1"
-bellman_ce = { git = "https://github.com/matter-labs/bellman", rev = "9e35737", default-features = false }
+bellman_ce = { version = "0.3.3", default-features = false}
 
 [dev-dependencies]
 glob = "0.2.11"
diff --git a/zokrates_embed/Cargo.toml b/zokrates_embed/Cargo.toml
index 9faafe84..d7d92ac0 100644
--- a/zokrates_embed/Cargo.toml
+++ b/zokrates_embed/Cargo.toml
@@ -10,5 +10,5 @@ wasm = ["bellman_ce/wasm", "sapling-crypto_ce/wasm"]
 multicore = ["bellman_ce/multicore", "sapling-crypto_ce/multicore"]
 
 [dependencies]
-bellman_ce = { git = "https://github.com/matter-labs/bellman", rev = "9e35737", default-features = false}
+bellman_ce = { version = "0.3.3", default-features = false}
 sapling-crypto_ce = { version = "0.1.1", default-features = false }
\ No newline at end of file
diff --git a/zokrates_field/Cargo.toml b/zokrates_field/Cargo.toml
index 0f4eccb6..d0961d94 100644
--- a/zokrates_field/Cargo.toml
+++ b/zokrates_field/Cargo.toml
@@ -12,8 +12,8 @@ bincode = "0.8.0"
 serde_json = "1.0"
 num-traits = { version = "0.2", default-features = false }
 num-integer = { version = "0.1", default-features = false }
-pairing_ce = "0.18"
-ff_ce = { features = ["derive"], version = "0.7" }
+pairing_ce = "0.20"
+ff_ce = { features = ["derive"], version = "0.9" }
 
 [dev-dependencies]
 rand = "0.4"