diff --git a/poetry.lock b/poetry.lock
index 2771f97..5601c34 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -138,21 +138,18 @@ category = "main"
 optional = false
 python-versions = "*"
 
-[package.dependencies]
-six = "*"
-
 [[package]]
 name = "corenetworks"
-version = "0.1.6"
-description = "Python API client for Domain Management Automation with Core Networks https://www.core-networks.de/"
+version = "0.2.0"
+description = "Python library for the core-networks.de DNS API."
 category = "main"
 optional = false
-python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,<4"
+python-versions = ">=3.6.0,<4.0.0"
 
 [package.dependencies]
-jsonschema = "*"
-requests = "*"
-six = "*"
+jsonschema = ">=3.2.0,<4.0.0"
+requests = ">=2.25.1,<3.0.0"
+six = ">=1.15.0,<2.0.0"
 
 [[package]]
 name = "coverage"
@@ -668,7 +665,7 @@ version = "5.3.1"
 description = "YAML parser and emitter for Python"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+python-versions = "*"
 
 [[package]]
 name = "requests"
@@ -905,7 +902,7 @@ test = ["zope.security", "zope.testrunner"]
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.6.0"
-content-hash = "fcc89434b37effc052e4536ab72a77d8fa1fa537a31c52814b3c541ac6292918"
+content-hash = "c212a90f01a68291e23dd55602f0abcc18d5b617fb39412191d7d362955d1026"
 
 [metadata.files]
 acme = [
@@ -985,8 +982,8 @@ configobj = [
     {file = "configobj-5.0.6.tar.gz", hash = "sha256:a2f5650770e1c87fb335af19a9b7eb73fc05ccf22144eb68db7d00cd2bcb0902"},
 ]
 corenetworks = [
-    {file = "corenetworks-0.1.6-py2.py3-none-any.whl", hash = "sha256:7014dba890e2e7b6e26396e6094d68bda136ff7aba161a3845c8bb8daba86d1e"},
-    {file = "corenetworks-0.1.6.tar.gz", hash = "sha256:78497640e133ae065385f6e9893b960fbfbedb74b8ce21caa4bb0c345c29cbaf"},
+    {file = "corenetworks-0.2.0-py3-none-any.whl", hash = "sha256:a9ee2e1045b00e9681db5a38432e6f5db4697ce4a0384763766dd5f8faf0f0ec"},
+    {file = "corenetworks-0.2.0.tar.gz", hash = "sha256:808705669509e9f3385084e96c722597a5f3a0a007cfb7d70f0b4b41f68cefb8"},
 ]
 coverage = [
     {file = "coverage-5.3.1-cp27-cp27m-macosx_10_9_x86_64.whl", hash = "sha256:fabeeb121735d47d8eab8671b6b031ce08514c86b7ad8f7d5490a7b6dcd6267d"},
@@ -1238,6 +1235,8 @@ pyyaml = [
     {file = "PyYAML-5.3.1-cp37-cp37m-win_amd64.whl", hash = "sha256:73f099454b799e05e5ab51423c7bcf361c58d3206fa7b0d555426b1f4d9a3eaf"},
     {file = "PyYAML-5.3.1-cp38-cp38-win32.whl", hash = "sha256:06a0d7ba600ce0b2d2fe2e78453a470b5a6e000a985dd4a4e54e436cc36b0e97"},
     {file = "PyYAML-5.3.1-cp38-cp38-win_amd64.whl", hash = "sha256:95f71d2af0ff4227885f7a6605c37fd53d3a106fcab511b8860ecca9fcf400ee"},
+    {file = "PyYAML-5.3.1-cp39-cp39-win32.whl", hash = "sha256:ad9c67312c84def58f3c04504727ca879cb0013b2517c85a9a253f0cb6380c0a"},
+    {file = "PyYAML-5.3.1-cp39-cp39-win_amd64.whl", hash = "sha256:6034f55dab5fea9e53f436aa68fa3ace2634918e8b5994d82f3621c04ff5ed2e"},
     {file = "PyYAML-5.3.1.tar.gz", hash = "sha256:b8eac752c5e14d3eca0e6dd9199cd627518cb5ec06add0de9d32baeee6fe645d"},
 ]
 requests = [
diff --git a/pyproject.toml b/pyproject.toml
index 03d2560..30d4191 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,7 +40,7 @@ dns-corenetworks = "certbot_dns_corenetworks.dns_corenetworks:Authenticator"
 [tool.poetry.dependencies]
 acme = "^1.10.1"
 certbot = "^1.10.1 "
-corenetworks = "^0.1.4"
+corenetworks = "^0.2.0"
 parsedatetime = "^2.6"
 python = "^3.6.0"
 "zope.interface" = "^5.2.0"