diff --git a/srv/energyDB.py b/srv/energyDB.py
index 3e036fb..277d478 100644
--- a/srv/energyDB.py
+++ b/srv/energyDB.py
@@ -6,6 +6,12 @@ import databases
 import sqlalchemy
 from sqlite3 import OperationalError
 
+API_VERSION_MAJOR = 1
+API_VERSION_MINOR = 0
+
+REST_API_ROOT = f"/energy/v{API_VERSION_MAJOR}/"
+REST_API_VERSION = REST_API_ROOT + ".0"
+
 DATABASE_URL = "sqlite:///./energyDB.sqlite"
 # DATABASE_URL = "sqlite://"
 db = databases.Database(DATABASE_URL)
@@ -57,7 +63,7 @@ async def shutdown():
 #     if token != fake_secret_token:
 #         raise HTTPException(status_code=400, detail="Invalid X-Token header")
 
-@app.put("/energy/bulkData")
+@app.put(REST_API_ROOT + "bulkData")
 async def putBulkEnergyData(bulkData: BulkData):
     valuesToInsert = []
     for channelData in bulkData.bulk:
@@ -72,7 +78,7 @@ async def putBulkEnergyData(bulkData: BulkData):
         "valuesToInsert": valuesToInsert
     }
 
-@app.get("/energy/bulkData", response_model = BulkData)
+@app.get(REST_API_ROOT + "bulkData", response_model = BulkData)
 async def getBulkEnergyData(bulkDataRequest: BulkDataRequest):
     bulkData = []
     for ch in bulkDataRequest.channel_ids:
diff --git a/test/test_EnergyDB.py b/test/test_EnergyDB.py
index 832477e..39fd002 100644
--- a/test/test_EnergyDB.py
+++ b/test/test_EnergyDB.py
@@ -8,7 +8,7 @@ import urllib.parse
 from srv import energyDB
 
 class Test_energyDb:
-
+    restApiRoot = "/energy/v1/"
     bulkTestData = [
         {
             "channel_id": 1,
@@ -47,7 +47,9 @@ class Test_energyDb:
 
     def _test_bulkData_put(self):
         # response = self.client.put("/energy/bulkData", json=self.bulkTestData);
-        response = self.client.put("/energy/bulkData", json={"bulk": self.bulkTestData})
+        response = self.client.put(
+            self.restApiRoot + "bulkData",
+            json={"bulk": self.bulkTestData})
         # print(f"dir(response): {dir(response)}")
         # print(f"dir(response.request): {dir(response.request)}")
         # print("---- request")
@@ -68,7 +70,7 @@ class Test_energyDb:
         fromTimestamp = datetime.fromisoformat("2020-12-11T12:30:00")
         tillTimestamp = datetime.fromisoformat("2020-12-11T12:30:59")
         response = self.client.get(
-            "/energy/bulkData",
+            self.restApiRoot + "bulkData",
             json = {
                 "channel_ids": [1, 2, 3],
                 "fromTime": fromTimestamp.isoformat(),
@@ -100,7 +102,7 @@ class Test_energyDb:
         print(f"energyData: {energyData}")
         # response = self.client.put("/energies/1", json=energyData) #, headers={"X-Token": "coneofsilence"})
         response = self.client.put(
-            "/energy/2",
+            self.restApiRoot + "2",
             # params=energyData,
             json=energyData) #, headers={"X-Token": "coneofsilence"})
         # print(f"dir(response): {dir(response)}")
@@ -120,7 +122,7 @@ class Test_energyDb:
 
     @pytest.mark.skip(reason="Ignore me temporarily")
     def test_get_energy(self):
-        response = self.client.get("/energy/1")
+        response = self.client.get(self.restApiRoot + "1")
         # print(f"dir(response): {dir(response)}")
         # print(f"dir(response.request): {dir(response.request)}")
         # print("---- request")