diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 518247a..d5dc593 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -17,13 +17,19 @@ env:
 
 jobs:
   tests:
-    name: Run ${{ matrix.mark }} tests (Python ${{ matrix.python-version }} on ${{ matrix.os }})
+    name: Run tests (Python ${{ matrix.python-version }}, Pydantic ${{ matrix.pydantic-version }}, ${{ matrix.os }})
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.7', '3.12']
-        os: [ubuntu-latest]
+        include:
+          - python-version: '3.7'
+            pydantic-version: '1'
+            os: ubuntu-latest
+
+          - python-version: '3.12'
+            pydantic-version: '2'
+            os: ubuntu-latest
 
     steps:
       - name: Checkout code
@@ -47,10 +53,10 @@ jobs:
         uses: actions/cache@v4
         with:
           path: ~/.cache/pip
-          key: ${{ runner.os }}-python-${{ matrix.python-version }}-tests-${{ hashFiles('requirements*.txt') }}
+          key: ${{ runner.os }}-python-${{ matrix.python-version }}-pydantic-${{ matrix.pydantic-version}}-tests-${{ hashFiles('requirements*.txt') }}
           restore-keys: |
-            ${{ runner.os }}-python-${{ matrix.python-version }}-tests-${{ hashFiles('requirements*.txt') }}
-            ${{ runner.os }}-python-${{ matrix.python-version }}-tests-
+            ${{ runner.os }}-python-${{ matrix.python-version }}-pydantic-${{ matrix.pydantic-version}}-tests-${{ hashFiles('requirements*.txt') }}
+            ${{ runner.os }}-python-${{ matrix.python-version }}-pydantic-${{ matrix.pydantic-version}}-tests-
             ${{ runner.os }}-python
             ${{ runner.os }}-
 
@@ -58,7 +64,7 @@ jobs:
         run: python -m pip install --upgrade pip setuptools wheel
 
       - name: Install dependencies
-        run: pip install -I -r requirements.txt -r requirements-test.txt
+        run: pip install -I -r requirements.txt -r requirements-test.txt "pydantic==${{ matrix.pydantic-version }}.*"
 
       - name: Build package
         run: |
@@ -68,6 +74,7 @@ jobs:
       - name: Run tests
         run: |
           mkdir reports/ || echo "Directory exists"
+          # required to register package in etl-entities
           pip install -e . --no-build-isolation
           source .env.local
           ./run_tests.sh
@@ -75,7 +82,7 @@ jobs:
       - name: Upload coverage results
         uses: actions/upload-artifact@v4
         with:
-          name: coverage-${{ matrix.python-version }}-os-${{ matrix.os }}
+          name: coverage-python-${{ matrix.python-version }}-pydantic-${{ matrix.pydantic-version }}-os-${{ matrix.os }}
           path: reports/*
 
       - name: Shutdown Backend Container
diff --git a/docs/changelog/next_release/14.feature.rst b/docs/changelog/next_release/14.feature.rst
new file mode 100644
index 0000000..bda8f10
--- /dev/null
+++ b/docs/changelog/next_release/14.feature.rst
@@ -0,0 +1 @@
+Add Pydantic v2 support.
diff --git a/horizon_hwm_store/horizon_hwm_store.py b/horizon_hwm_store/horizon_hwm_store.py
index 4198d3c..f478181 100644
--- a/horizon_hwm_store/horizon_hwm_store.py
+++ b/horizon_hwm_store/horizon_hwm_store.py
@@ -14,7 +14,15 @@
     HWMUpdateRequestV1,
     NamespacePaginateQueryV1,
 )
-from pydantic import Field, PrivateAttr
+
+try:
+    from pydantic.v1 import Field, PrivateAttr, root_validator
+except ImportError:
+    from pydantic import (  # type: ignore[no-redef, assignment]
+        Field,
+        PrivateAttr,
+        root_validator,
+    )
 
 
 @register_hwm_store_class("horizon")
@@ -142,17 +150,7 @@ def main(config):
     retry: RetryConfig = Field(default_factory=RetryConfig)
     timeout: TimeoutConfig = Field(default_factory=TimeoutConfig)
     _client: HorizonClientSync = PrivateAttr()
-    _namespace_id: Optional[int] = PrivateAttr()
-
-    def __init__(self, **kwargs):
-        super().__init__(**kwargs)
-        self._client = HorizonClientSync(  # noqa: WPS601
-            base_url=self.api_url,
-            auth=self.auth,
-            retry=self.retry,
-            timeout=self.timeout,
-        )
-        self._namespace_id = None  # noqa: WPS601
+    _namespace_id: Optional[int] = PrivateAttr(default=None)
 
     def get_hwm(self, name: str) -> Optional[HWM]:
         namespace_id = self._get_namespace_id()
@@ -203,6 +201,16 @@ def check(self) -> HorizonHWMStore:
         self._get_namespace_id()
         return self
 
+    @root_validator(skip_on_failure=True)
+    def _set_client(cls, values):  # noqa: N805
+        values["_client"] = HorizonClientSync(  # noqa: WPS601
+            base_url=values["api_url"],
+            auth=values["auth"],
+            retry=values["retry"],
+            timeout=values["timeout"],
+        )
+        return values
+
     def _get_namespace_id(self) -> int:
         """
         Fetch the ID of the namespace. Raises an exception if the namespace doesn't exist.
diff --git a/requirements-docs.txt b/requirements-docs.txt
index 0ef5b3a..4883d56 100644
--- a/requirements-docs.txt
+++ b/requirements-docs.txt
@@ -1,4 +1,4 @@
-autodoc_pydantic<2
+autodoc_pydantic
 furo
 numpydoc
 sphinx
diff --git a/requirements.txt b/requirements.txt
index 3fba505..362339f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
 data-horizon[client-sync]>=0.0.8,<0.1
-etl-entities>=2.1.0,<2.3.0
+etl-entities>=2.1.0,<2.4.0