diff --git a/poetry.lock b/poetry.lock
index b7e77fa..9331ca5 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -61,6 +61,17 @@ files = [
 [package.dependencies]
 typing-extensions = {version = ">=4.0.0", markers = "python_version < \"3.11\""}
 
+[[package]]
+name = "async-property"
+version = "0.2.2"
+description = "Python decorator for async properties."
+optional = false
+python-versions = "*"
+files = [
+    {file = "async_property-0.2.2-py2.py3-none-any.whl", hash = "sha256:8924d792b5843994537f8ed411165700b27b2bd966cefc4daeefc1253442a9d7"},
+    {file = "async_property-0.2.2.tar.gz", hash = "sha256:17d9bd6ca67e27915a75d92549df64b5c7174e9dc806b30a3934dc4ff0506380"},
+]
+
 [[package]]
 name = "babel"
 version = "2.15.0"
@@ -1184,13 +1195,13 @@ files = [
 
 [[package]]
 name = "pkginfo"
-version = "1.10.0"
+version = "1.11.0"
 description = "Query metadata from sdists / bdists / installed packages."
 optional = false
-python-versions = ">=3.6"
+python-versions = ">=3.8"
 files = [
-    {file = "pkginfo-1.10.0-py3-none-any.whl", hash = "sha256:889a6da2ed7ffc58ab5b900d888ddce90bce912f2d2de1dc1c26f4cb9fe65097"},
-    {file = "pkginfo-1.10.0.tar.gz", hash = "sha256:5df73835398d10db79f8eecd5cd86b1f6d29317589ea70796994d49399af6297"},
+    {file = "pkginfo-1.11.0-py3-none-any.whl", hash = "sha256:6d4998d1cd42c297af72cc0eab5f5bab1d356fb8a55b828fa914173f8bc1ba05"},
+    {file = "pkginfo-1.11.0.tar.gz", hash = "sha256:dba885aa82e31e80d615119874384923f4e011c2a39b0c4b7104359e36cb7087"},
 ]
 
 [package.extras]
@@ -2032,20 +2043,20 @@ test = ["pytest (>=6.0.0)", "setuptools (>=65)"]
 
 [[package]]
 name = "zipp"
-version = "3.19.0"
+version = "3.19.1"
 description = "Backport of pathlib-compatible object wrapper for zip files"
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "zipp-3.19.0-py3-none-any.whl", hash = "sha256:96dc6ad62f1441bcaccef23b274ec471518daf4fbbc580341204936a5a3dddec"},
-    {file = "zipp-3.19.0.tar.gz", hash = "sha256:952df858fb3164426c976d9338d3961e8e8b3758e2e059e0f754b8c4262625ee"},
+    {file = "zipp-3.19.1-py3-none-any.whl", hash = "sha256:2828e64edb5386ea6a52e7ba7cdb17bb30a73a858f5eb6eb93d8d36f5ea26091"},
+    {file = "zipp-3.19.1.tar.gz", hash = "sha256:35427f6d5594f4acf82d25541438348c26736fa9b3afa2754bcd63cdb99d8e8f"},
 ]
 
 [package.extras]
-docs = ["furo", "jaraco.packaging (>=9.3)", "jaraco.tidelift (>=1.4)", "rst.linker (>=1.9)", "sphinx (>=3.5)", "sphinx-lint"]
-testing = ["big-O", "jaraco.functools", "jaraco.itertools", "jaraco.test", "more-itertools", "pytest (>=6,!=8.1.*)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=2.2)", "pytest-ignore-flaky", "pytest-mypy", "pytest-ruff (>=0.2.1)"]
+doc = ["furo", "jaraco.packaging (>=9.3)", "jaraco.tidelift (>=1.4)", "rst.linker (>=1.9)", "sphinx (>=3.5)", "sphinx-lint"]
+test = ["big-O", "jaraco.functools", "jaraco.itertools", "jaraco.test", "more-itertools", "pytest (>=6,!=8.1.*)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=2.2)", "pytest-ignore-flaky", "pytest-mypy", "pytest-ruff (>=0.2.1)"]
 
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.8,<4.0"
-content-hash = "54d1b5557cc0799021e823a9e349b9251cab25e3f427a19e9313f580bf7fe04b"
+content-hash = "d595876f098ba3ac3601772c153cc547ec1f7029d52d1f87ebc77968349109ab"
diff --git a/pyproject.toml b/pyproject.toml
index a39ce89..aa17e74 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,6 +35,7 @@ requests-toolbelt = ">=0.6.0"
 deprecation = ">=2.1.0"
 jwcrypto = ">=1.5.4"
 httpx = ">=0.23.2"
+async-property = ">=0.2.2"
 
 [tool.poetry.group.docs.dependencies]
 alabaster = ">=0.7.0"
diff --git a/tox.env b/tox.env
index b19a1aa..5967d51 100644
--- a/tox.env
+++ b/tox.env
@@ -2,3 +2,4 @@ KEYCLOAK_ADMIN=admin
 KEYCLOAK_ADMIN_PASSWORD=admin
 KEYCLOAK_HOST={env:KEYCLOAK_HOST:localhost}
 KEYCLOAK_PORT=8081
+KEYCLOAK_DOCKER_IMAGE_TAG={env:KEYCLOAK_DOCKER_IMAGE_TAG:latest}