diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 03cc398..b4883a1 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -34,9 +34,7 @@ jobs:
           key: venv-${{ runner.os }}-${{ steps.full-python-version.outputs.version }}-${{ hashFiles('**/poetry.lock') }}
 
       - name: Install dependencies
-        if: steps.cache.outputs.cache-hit != 'true'
-        run: |
-          poetry install --no-interaction --no-root
+        run: poetry install --no-interaction
 
       - name: Linting
         run: poetry run pre-commit run --all-files
@@ -51,18 +49,6 @@ jobs:
         python-version: [ '3.9', '3.10']
         poetry-version: [ 1.2.1 ]
 
-    services:
-      rdf4j:
-        # Docker Hub image
-        image: eclipse/rdf4j-workbench
-        ports:
-          - 8080:8080
-      blazegraph:
-        # Docker Hub image
-        image: openkbs/blazegraph
-        ports:
-          - 9999:9999
-
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
@@ -93,8 +79,7 @@ jobs:
           key: venv-${{ runner.os }}-${{ steps.full-python-version.outputs.version }}-${{ hashFiles('**/poetry.lock') }}
 
       - name: Install dependencies
-        if: steps.cache.outputs.cache-hit != 'true'
-        run: poetry install --no-interaction --no-root
+        run: poetry install --no-interaction
 
       - name: Run pytest
         if: ${{ ( runner.os != 'Linux' ) || ( matrix.python-version  != '3.9' ) }}
@@ -102,7 +87,7 @@ jobs:
 
       - name: Run pytest with coverage
         if: ${{ ( runner.os == 'Linux' ) && ( matrix.python-version  == '3.9' ) }}
-        run: poetry run pytest -q --cov=cimsparql --cov-report=xml tests
+        run: poetry run pytest -q --cov=psseio --cov-report=xml tests
 
       - name: Upload coverage
         if: ${{ ( runner.os == 'Linux' ) && ( matrix.python-version  == '3.9' ) }}
diff --git a/poetry.lock b/poetry.lock
index 770fac4..e842112 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -26,6 +26,7 @@ mypy-extensions = ">=0.4.3"
 pathspec = ">=0.9.0"
 platformdirs = ">=2"
 tomli = {version = ">=1.1.0", markers = "python_full_version < \"3.11.0a7\""}
+typing-extensions = {version = ">=3.10.0.0", markers = "python_version < \"3.10\""}
 
 [package.extras]
 colorama = ["colorama (>=0.4.3)"]
@@ -231,7 +232,10 @@ optional = false
 python-versions = ">=3.8"
 
 [package.dependencies]
-numpy = {version = ">=1.21.0", markers = "python_version >= \"3.10\""}
+numpy = [
+    {version = ">=1.21.0", markers = "python_version >= \"3.10\""},
+    {version = ">=1.20.3", markers = "python_version < \"3.10\""},
+]
 python-dateutil = ">=2.8.1"
 pytz = ">=2020.1"
 
@@ -407,6 +411,14 @@ category = "dev"
 optional = false
 python-versions = ">=3.7"
 
+[[package]]
+name = "typing-extensions"
+version = "4.4.0"
+description = "Backported and Experimental Type Hints for Python 3.7+"
+category = "dev"
+optional = false
+python-versions = ">=3.7"
+
 [[package]]
 name = "virtualenv"
 version = "20.16.5"
@@ -426,8 +438,8 @@ testing = ["coverage (>=6.2)", "coverage-enable-subprocess (>=1)", "flaky (>=3.7
 
 [metadata]
 lock-version = "1.1"
-python-versions = "^3.10"
-content-hash = "6ee9c976f250ebb46443d9f59ad488a01eec0049f166d469f1b71d3a8562373a"
+python-versions = "^3.9"
+content-hash = "8e0f899d013fbd99965f31d595cdffe92e14b205c79f960183e0051ab46be63c"
 
 [metadata.files]
 attrs = []
@@ -467,4 +479,5 @@ pyyaml = []
 six = []
 toml = []
 tomli = []
+typing-extensions = []
 virtualenv = []
diff --git a/pyproject.toml b/pyproject.toml
index 5ee85ab..dc7ac04 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ authors = ["Statnett Datascience <Datascience.Drift@Statnett.no>"]
 repository = "https://github.com/statnett/psseio.git"
 
 [tool.poetry.dependencies]
-python = "^3.10"
+python = "^3.9"
 pandas = "*"
 
 [tool.poetry.dev-dependencies]