diff --git a/Cargo.lock b/Cargo.lock
index 59d28d6..47bfe5e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "Inflector"
 version = "0.11.4"
@@ -18,9 +20,9 @@ checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
 [[package]]
 name = "aho-corasick"
-version = "0.7.15"
+version = "0.7.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7404febffaa47dac81aa44dba71523c9d069b1bdc50a77db41195149e17f68e5"
+checksum = "cc936419f96fa211c1b9166887b38e5e40b19958e5b895be7c1f93adec7071ac"
 dependencies = [
  "memchr",
 ]
@@ -70,6 +72,12 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "ascii_utils"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "71938f30533e4d95a6d17aa530939da3842c2ab6f4f84b9dae68447e4129f74a"
+
 [[package]]
 name = "async-bincode"
 version = "0.6.1"
@@ -78,7 +86,7 @@ checksum = "2a31c08aa335b3ab414d29bdefe1f4353408abf93f3db1e3e2cc78d3ec4f0d43"
 dependencies = [
  "bincode",
  "byteorder",
- "bytes 1.0.1",
+ "bytes",
  "futures-core",
  "futures-sink",
  "serde",
@@ -87,21 +95,25 @@ dependencies = [
 
 [[package]]
 name = "async-graphql"
-version = "2.8.2"
+version = "4.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb5e71af65ee4a367603829e92b26710caf4116d1eaca8953dedf1809b33694a"
+checksum = "84ecd9edbd48b68e44f81b720d83e670d876dce440856feee6c892c8cd3f6798"
 dependencies = [
  "async-graphql-derive",
  "async-graphql-parser",
  "async-graphql-value",
  "async-stream",
  "async-trait",
+ "bytes",
+ "fast_chemail",
  "fnv",
  "futures-util",
  "http",
  "indexmap",
  "log",
+ "mime",
  "multer",
+ "num-traits",
  "once_cell",
  "pin-project-lite",
  "regex",
@@ -114,13 +126,13 @@ dependencies = [
 
 [[package]]
 name = "async-graphql-derive"
-version = "2.8.2"
+version = "4.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6fd4c2eb837e894909fe13509f2351fa3990c114426e41255936800892ccbe26"
+checksum = "a8801127f6a7b3af410498d2f971ee6da8f12f9b0b784473da636ce04e5ac565"
 dependencies = [
  "Inflector",
  "async-graphql-parser",
- "darling 0.12.4",
+ "darling 0.14.4",
  "proc-macro-crate",
  "proc-macro2",
  "quote",
@@ -130,23 +142,24 @@ dependencies = [
 
 [[package]]
 name = "async-graphql-parser"
-version = "2.7.1"
+version = "4.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2a8d8116f3015b7686ef98ffb70a74183c3c17bf45135993d3f095812e09e786"
+checksum = "c4097e2e3e313a9220df25485046b7749f4b8d749aba8ed7e09e929d60a643e3"
 dependencies = [
  "async-graphql-value",
  "pest",
- "pest_derive",
  "serde",
  "serde_json",
 ]
 
 [[package]]
 name = "async-graphql-value"
-version = "2.6.5"
+version = "4.0.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d8342ada84efe4b3d59e1313d1d2740a8ccfc76ddb57ccf55e45a6464dd7d0d3"
+checksum = "7a941b499fead4a3fb5392cabf42446566d18c86313f69f2deab69560394d65f"
 dependencies = [
+ "bytes",
+ "indexmap",
  "serde",
  "serde_json",
 ]
@@ -346,17 +359,14 @@ version = "1.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
 
-[[package]]
-name = "bytes"
-version = "0.5.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e4cec68f03f32e44924783795810fa50a7035d8c8ebe78580ad7e6c703fba38"
-
 [[package]]
 name = "bytes"
 version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b700ce4376041dcd0a327fd0097c41095743c4c8af8887265942faf1100bd040"
+dependencies = [
+ "serde",
+]
 
 [[package]]
 name = "cc"
@@ -428,12 +438,6 @@ version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "245097e9a4535ee1e3e3931fcfcd55a796a44c643e8596ff6566d68f09b87bbc"
 
-[[package]]
-name = "convert_case"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6245d59a3e82a7fc217c5828a6692dbc6dfb63a0c8c90495621f7b9d79704a0e"
-
 [[package]]
 name = "cpuid-bool"
 version = "0.1.2"
@@ -532,12 +536,12 @@ dependencies = [
 
 [[package]]
 name = "darling"
-version = "0.12.4"
+version = "0.14.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f2c43f534ea4b0b049015d00269734195e6d3f0f6635cb692251aca6f9f8b3c"
+checksum = "7b750cb3417fd1b327431a470f388520309479ab0bf5e323505daf0290cd3850"
 dependencies = [
- "darling_core 0.12.4",
- "darling_macro 0.12.4",
+ "darling_core 0.14.4",
+ "darling_macro 0.14.4",
 ]
 
 [[package]]
@@ -556,9 +560,9 @@ dependencies = [
 
 [[package]]
 name = "darling_core"
-version = "0.12.4"
+version = "0.14.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e91455b86830a1c21799d94524df0845183fa55bafd9aa137b01c7d1065fa36"
+checksum = "109c1ca6e6b7f82cc233a97004ea8ed7ca123a9af07a8230878fcfda9b158bf0"
 dependencies = [
  "fnv",
  "ident_case",
@@ -581,11 +585,11 @@ dependencies = [
 
 [[package]]
 name = "darling_macro"
-version = "0.12.4"
+version = "0.14.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "29b5acf0dea37a7f66f7b25d2c5e93fd46f8f6968b1a5d7a3e02e97768afc95a"
+checksum = "a4aab4dbc9f7611d8b55048a3a16d2d010c2c8334e46304b40ac1cc14bf3b48e"
 dependencies = [
- "darling_core 0.12.4",
+ "darling_core 0.14.4",
  "quote",
  "syn",
 ]
@@ -632,18 +636,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "derive_more"
-version = "0.99.13"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f82b1b72f1263f214c0f823371768776c4f5841b942c9883aa8e5ec584fd0ba6"
-dependencies = [
- "convert_case",
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "diff"
 version = "0.1.12"
@@ -927,7 +919,7 @@ dependencies = [
  "async-graphql",
  "async-mutex",
  "async-trait",
- "bytes 1.0.1",
+ "bytes",
  "duniter-bda",
  "duniter-core",
  "duniter-gva-conf",
@@ -1181,6 +1173,15 @@ dependencies = [
  "num_cpus",
 ]
 
+[[package]]
+name = "fast_chemail"
+version = "0.9.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "495a39d30d624c2caabe6312bfead73e7717692b44e0b32df168c275a2e8e9e4"
+dependencies = [
+ "ascii_utils",
+]
+
 [[package]]
 name = "flate2"
 version = "1.0.20"
@@ -1419,7 +1420,7 @@ version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fc018e188373e2777d0ef2467ebff62a08e66c3f5857b23c8fbec3018210dc00"
 dependencies = [
- "bytes 1.0.1",
+ "bytes",
  "fnv",
  "futures-core",
  "futures-sink",
@@ -1446,7 +1447,7 @@ checksum = "f0b7591fb62902706ae8e7aaff416b1b0fa2c0fd0878b46dc13baa3712d8a855"
 dependencies = [
  "base64",
  "bitflags",
- "bytes 1.0.1",
+ "bytes",
  "headers-core",
  "http",
  "mime",
@@ -1493,7 +1494,7 @@ version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "527e8c9ac747e28542699a951517aa9a6945af506cd1f2e1b53a576c17b6cc11"
 dependencies = [
- "bytes 1.0.1",
+ "bytes",
  "fnv",
  "itoa",
 ]
@@ -1504,7 +1505,7 @@ version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5dfb77c123b4e2f72a2069aeae0b4b4949cc7e966df277813fc16347e7549737"
 dependencies = [
- "bytes 1.0.1",
+ "bytes",
  "http",
  "pin-project-lite",
 ]
@@ -1527,7 +1528,7 @@ version = "0.14.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5f006b8784cfb01fe7aa9c46f5f5cd4cf5c85a8c612a0653ec97642979062665"
 dependencies = [
- "bytes 1.0.1",
+ "bytes",
  "futures-channel",
  "futures-core",
  "futures-util",
@@ -1585,6 +1586,7 @@ checksum = "824845a0bf897a9042383849b02c1bc219c2383772efcd5c6f9766fa4b81aef3"
 dependencies = [
  "autocfg",
  "hashbrown",
+ "serde",
 ]
 
 [[package]]
@@ -1593,7 +1595,7 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f97967975f448f1a7ddb12b0bc41069d09ed6a1c161a92687e057325db35d413"
 dependencies = [
- "bytes 1.0.1",
+ "bytes",
 ]
 
 [[package]]
@@ -1716,9 +1718,9 @@ dependencies = [
 
 [[package]]
 name = "log"
-version = "0.4.14"
+version = "0.4.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "51b9bbe6c47d51fc3e1a9b945965946b4c44142ab8792c50835a980d362c2710"
+checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
 dependencies = [
  "cfg-if 1.0.0",
 ]
@@ -1737,9 +1739,9 @@ checksum = "7ffc5c5338469d4d3ea17d269fa8ea3512ad247247c30bd2df69e68309ed0a08"
 
 [[package]]
 name = "memchr"
-version = "2.3.4"
+version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ee1c47aaa256ecabcaea351eae4a9b01ef39ed810004e298d2511ed284b1525"
+checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
 
 [[package]]
 name = "memoffset"
@@ -1827,21 +1829,20 @@ dependencies = [
 
 [[package]]
 name = "multer"
-version = "1.2.2"
+version = "2.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "99851e6ad01b0fbe086dda2dea00d68bb84fc7d7eae2c39ca7313da9197f4d31"
+checksum = "6ed4198ce7a4cbd2a57af78d28c6fbb57d81ac5f1d6ad79ac6c5587419cbdf22"
 dependencies = [
- "bytes 0.5.6",
- "derive_more",
+ "bytes",
  "encoding_rs",
- "futures",
+ "futures-util",
  "http",
  "httparse",
- "lazy_static",
  "log",
+ "memchr",
  "mime",
- "regex",
- "twoway 0.2.1",
+ "spin 0.9.6",
+ "version_check",
 ]
 
 [[package]]
@@ -1859,7 +1860,7 @@ dependencies = [
  "rand 0.7.3",
  "safemem",
  "tempfile",
- "twoway 0.1.8",
+ "twoway",
 ]
 
 [[package]]
@@ -2170,11 +2171,11 @@ checksum = "bc881b2c22681370c6a780e47af9840ef841837bc98118431d4e1868bd0c1086"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.26"
+version = "1.0.52"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a152013215dca273577e18d2bf00fa862b89b24169fb78c4c95aeb07992c9cec"
+checksum = "1d0e1ae9e836cc3beddd63db0df682593d7e2d3d891ae8c9083d2113e1744224"
 dependencies = [
- "unicode-xid",
+ "unicode-ident",
 ]
 
 [[package]]
@@ -2205,9 +2206,9 @@ checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
 
 [[package]]
 name = "quote"
-version = "1.0.9"
+version = "1.0.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3d0b9745dc2debf507c8422de05d7226cc1f0644216dfdfead988f9b1ab32a7"
+checksum = "4424af4bf778aae2051a77b60283332f386554255d722233d09fbfc7e30da2fc"
 dependencies = [
  "proc-macro2",
 ]
@@ -2345,9 +2346,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.4.5"
+version = "1.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "957056ecddbeba1b26965114e191d2e8589ce74db242b6ea25fc4062427a5c19"
+checksum = "48aaa5748ba571fb95cd2c85c09f629215d3a6ece942baa100950af03a34f733"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -2356,9 +2357,9 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.6.23"
+version = "0.6.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24d5f089152e60f62d28b835fbff2cd2e8dc0baf1ac13343bef92ab7eed84548"
+checksum = "456c603be3e8d448b072f410900c09faf164fbce2d480456f50eea6e25f9c848"
 
 [[package]]
 name = "remove_dir_all"
@@ -2384,7 +2385,7 @@ dependencies = [
  "cc",
  "libc",
  "once_cell",
- "spin",
+ "spin 0.5.2",
  "untrusted",
  "web-sys",
  "winapi",
@@ -2568,6 +2569,12 @@ version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
 
+[[package]]
+name = "spin"
+version = "0.9.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b5d6e0250b93c8427a177b849d144a96d5acc57006149479403d7861ab721e34"
+
 [[package]]
 name = "spinning_top"
 version = "0.2.3"
@@ -2633,13 +2640,13 @@ checksum = "1e81da0851ada1f3e9d4312c704aa4f8806f0f9d69faaf8df2f3464b4a9437c2"
 
 [[package]]
 name = "syn"
-version = "1.0.70"
+version = "1.0.109"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b9505f307c872bab8eb46f77ae357c8eba1fdacead58ee5a850116b1d7f82883"
+checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
 dependencies = [
  "proc-macro2",
  "quote",
- "unicode-xid",
+ "unicode-ident",
 ]
 
 [[package]]
@@ -2730,7 +2737,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "83f0c8e7c0addab50b663055baf787d0af7f413a46e6e7fb9559a4e4db7137a5"
 dependencies = [
  "autocfg",
- "bytes 1.0.1",
+ "bytes",
  "libc",
  "memchr",
  "mio",
@@ -2780,7 +2787,7 @@ version = "0.6.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "940a12c99365c31ea8dd9ba04ec1be183ffe4920102bb7122c2f515437601e8e"
 dependencies = [
- "bytes 1.0.1",
+ "bytes",
  "futures-core",
  "futures-sink",
  "log",
@@ -2901,7 +2908,7 @@ checksum = "8ada8297e8d70872fa9a551d93250a9f407beb9f37ef86494eb20012a2ff7c24"
 dependencies = [
  "base64",
  "byteorder",
- "bytes 1.0.1",
+ "bytes",
  "http",
  "httparse",
  "input_buffer",
@@ -2921,16 +2928,6 @@ dependencies = [
  "memchr",
 ]
 
-[[package]]
-name = "twoway"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6b40075910de3a912adbd80b5d8bad6ad10a23eeb1f5bf9d4006839e899ba5bc"
-dependencies = [
- "memchr",
- "unchecked-index",
-]
-
 [[package]]
 name = "typenum"
 version = "1.13.0"
@@ -2943,12 +2940,6 @@ version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "56dee185309b50d1f11bfedef0fe6d036842e3fb77413abef29f8f8d1c5d4c1c"
 
-[[package]]
-name = "unchecked-index"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eeba86d422ce181a719445e51872fa30f1f7413b62becb52e95ec91aa262d85c"
-
 [[package]]
 name = "unicase"
 version = "2.6.0"
@@ -2967,6 +2958,12 @@ dependencies = [
  "matches",
 ]
 
+[[package]]
+name = "unicode-ident"
+version = "1.0.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e5464a87b239f13a63a501f2701565754bae92d243d4bb7eb12f6d57d2269bf4"
+
 [[package]]
 name = "unicode-normalization"
 version = "0.1.17"
@@ -3064,7 +3061,7 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "332d47745e9a0c38636dbd454729b147d16bd1ed08ae67b3ab281c4506771054"
 dependencies = [
- "bytes 1.0.1",
+ "bytes",
  "futures",
  "headers",
  "http",
diff --git a/Cargo.toml b/Cargo.toml
index b29c4ed..59b7214 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,7 @@ repository = "https://git.duniter.org/nodes/rust/modules/duniter-gva"
 [dependencies]
 anyhow = "1.0.33"
 arrayvec = { version = "0.7", features = ["serde"] }
-async-graphql = { version = "2.8", features = ["log"] }
+async-graphql = { version = "4.0", features = ["log"] }
 async-mutex = "1.4.0"
 async-trait = "0.1.41"
 bytes = "1.0"
diff --git a/gql/Cargo.toml b/gql/Cargo.toml
index 8d61796..ced238d 100644
--- a/gql/Cargo.toml
+++ b/gql/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2018"
 [dependencies]
 anyhow = "1.0.33"
 arrayvec = { version = "0.7", features = ["serde"] }
-async-graphql = { version = "2.8", features = ["log"] }
+async-graphql = { version = "4.0", features = ["log"] }
 async-trait = "0.1.41"
 duniter-core = { git = "https://git.duniter.org/nodes/rust/duniter-core" }
 duniter-gva-db = { path = "../db" }