diff --git a/poetry.lock b/poetry.lock
index befe9bb6f4818b63bb5ca0d45964a6e4833bb730..4104aca93a32d18539887090f5b98e3866c2b183 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -27,7 +27,6 @@ speedups = ["aiodns", "brotlipy", "cchardet"]
 [[package]]
 category = "dev"
 description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
-marker = "python_version >= \"3.6\" and python_version < \"4.0\""
 name = "appdirs"
 optional = false
 python-versions = "*"
@@ -119,7 +118,7 @@ description = "Foreign Function Interface for Python calling C code."
 name = "cffi"
 optional = false
 python-versions = "*"
-version = "1.13.2"
+version = "1.14.0"
 
 [package.dependencies]
 pycparser = "*"
@@ -179,6 +178,14 @@ optional = false
 python-versions = "*"
 version = "1.0.1"
 
+[[package]]
+category = "dev"
+description = "Distribution utilities"
+name = "distlib"
+optional = false
+python-versions = "*"
+version = "0.3.0"
+
 [[package]]
 category = "main"
 description = "A python library for [duniter](https://git.duniter.org/nodes/typescript/duniter) client developers"
@@ -197,13 +204,21 @@ pyaes = ">=1.6.1"
 pylibscrypt = ">=1.7.1"
 pypeg2 = ">=2.15.2"
 
+[[package]]
+category = "dev"
+description = "A platform independent file lock."
+name = "filelock"
+optional = false
+python-versions = "*"
+version = "3.0.12"
+
 [[package]]
 category = "dev"
 description = "File identification library for Python"
 name = "identify"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
-version = "1.4.10"
+version = "1.4.11"
 
 [package.extras]
 license = ["editdistance"]
@@ -235,7 +250,7 @@ marker = "python_version < \"3.8\""
 name = "importlib-metadata"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
-version = "1.4.0"
+version = "1.5.0"
 
 [package.dependencies]
 zipp = ">=0.5"
@@ -292,12 +307,12 @@ python-versions = "*"
 version = "1.7.1"
 
 [[package]]
-category = "main"
+category = "dev"
 description = "More routines for operating on iterables, beyond itertools"
 name = "more-itertools"
 optional = false
 python-versions = ">=3.5"
-version = "8.1.0"
+version = "8.2.0"
 
 [[package]]
 category = "main"
@@ -313,7 +328,7 @@ description = "Node.js virtual environment builder"
 name = "nodeenv"
 optional = false
 python-versions = "*"
-version = "1.3.4"
+version = "1.3.5"
 
 [[package]]
 category = "dev"
@@ -321,7 +336,7 @@ description = "Core utilities for Python packages"
 name = "packaging"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "20.0"
+version = "20.1"
 
 [package.dependencies]
 pyparsing = ">=2.0.2"
@@ -471,7 +486,7 @@ description = "pytest: simple powerful testing with Python"
 name = "pytest"
 optional = false
 python-versions = ">=3.5"
-version = "5.3.2"
+version = "5.3.5"
 
 [package.dependencies]
 atomicwrites = ">=1.0"
@@ -492,6 +507,7 @@ python = "<3.6"
 version = ">=2.2.0"
 
 [package.extras]
+checkqa-mypy = ["mypy (v0.761)"]
 testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xmlschema"]
 
 [[package]]
@@ -562,8 +578,8 @@ category = "main"
 description = "Python 2 and 3 compatibility utilities"
 name = "six"
 optional = false
-python-versions = ">=2.6, !=3.0.*, !=3.1.*"
-version = "1.13.0"
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
+version = "1.14.0"
 
 [[package]]
 category = "main"
@@ -624,11 +640,25 @@ description = "Virtual Python Environment builder"
 name = "virtualenv"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
-version = "16.7.9"
+version = "20.0.3"
+
+[package.dependencies]
+appdirs = ">=1.4.3,<2"
+distlib = ">=0.3.0,<1"
+filelock = ">=3.0.0,<4"
+six = ">=1.12.0,<2"
+
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = ">=0.12,<2"
+
+[package.dependencies.importlib-resources]
+python = "<3.7"
+version = ">=1.0,<2"
 
 [package.extras]
-docs = ["sphinx (>=1.8.0,<2)", "towncrier (>=18.5.0)", "sphinx-rtd-theme (>=0.4.2,<1)"]
-testing = ["pytest (>=4.0.0,<5)", "coverage (>=4.5.0,<5)", "pytest-timeout (>=1.3.0,<2)", "six (>=1.10.0,<2)", "pytest-xdist", "pytest-localserver", "pypiserver", "mock", "xonsh"]
+docs = ["sphinx (>=2.0.0,<3)", "sphinx-argparse (>=0.2.5,<1)", "sphinx-rtd-theme (>=0.4.3,<1)", "towncrier (>=19.9.0rc1)", "proselint (>=0.10.2,<1)"]
+testing = ["pytest (>=4.0.0,<6)", "coverage (>=4.5.1,<6)", "pytest-mock (>=2.0.0,<3)", "pytest-env (>=0.6.2,<1)", "packaging (>=20.0)", "xonsh (>=0.9.13,<1)"]
 
 [[package]]
 category = "dev"
@@ -657,14 +687,11 @@ marker = "python_version < \"3.8\""
 name = "zipp"
 optional = false
 python-versions = ">=2.7"
-version = "1.0.0"
-
-[package.dependencies]
-more-itertools = "*"
+version = "1.1.0"
 
 [package.extras]
 docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
-testing = ["pathlib2", "contextlib2", "unittest2"]
+testing = ["pathlib2", "unittest2", "jaraco.itertools"]
 
 [metadata]
 content-hash = "fa67b26290477d18db9a1d00b3e4007168c3a7aaa1491a6e086ed068cfae6d9c"
@@ -718,39 +745,34 @@ black = [
     {file = "black-19.10b0.tar.gz", hash = "sha256:c2edb73a08e9e0e6f65a0e6af18b059b8b1cdd5bef997d7a0b181df93dc81539"},
 ]
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@@ -805,13 +827,20 @@ coverage-badge = [
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 ]
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 importlib-metadata = [
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@@ -841,8 +870,8 @@ libnacl = [
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@@ -864,11 +893,11 @@ multidict = [
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 pytest = [
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@@ -985,8 +1014,8 @@ regex = [
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@@ -1032,8 +1061,8 @@ typing-extensions = [
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@@ -1059,6 +1088,6 @@ yarl = [
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 zipp = [
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