diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1b12ee2..4ff6c1c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,16 +19,12 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install hatch
-    - name: Write persistent EE credentials
-      env:
-        EE_TOKEN: ${{ secrets.EE_TOKEN }}
-      run: |
-        mkdir -p /home/runner/.config/earthengine
-        echo $EE_TOKEN > /home/runner/.config/earthengine/credentials
     - name: Test with pytest
+      env:
+        EE_SERVICE_ACCOUNT: ${{ secrets.EE_SERVICE_ACCOUNT }}
       run: |
-        hatch run test:all
-  
+          hatch run test:all
+    
   lint:
     runs-on: ubuntu-latest
 
diff --git a/tests/conftest.py b/tests/conftest.py
index f07ca23..433ae29 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,4 +1,5 @@
 import json
+import os
 import warnings
 from collections import UserDict
 from pathlib import Path
@@ -65,7 +66,22 @@ def object_cache():
 
 
 def pytest_sessionstart(session):
-    ee.Initialize()
+    _init_ee_for_tests()
+
+
+def _init_ee_for_tests():
+    # Use the Github Service Account for CI tests
+    if os.environ.get("GITHUB_ACTIONS"):
+        key_data = os.environ.get("EE_SERVICE_ACCOUNT")
+        project_id = json.loads(key_data).get("project_id")
+        credentials = ee.ServiceAccountCredentials(None, key_data=key_data)
+    # Use stored persistent credentials for local tests
+    else:
+        # Project should be parsed from credentials
+        project_id = None
+        credentials = "persistent"
+
+    ee.Initialize(credentials, project=project_id)
 
 
 @pytest.fixture(autouse=True)