diff --git a/pyproject.toml b/pyproject.toml
index 9bda575..44f809f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,6 +23,7 @@ dependencies = [
     "numpy",
     "onnxruntime",
     "prpy[ffmpeg,numpy_min]>=0.2.7",
+    "python-dotenv",
     "pyyaml",
     "requests",
 ]
diff --git a/vitallens/constants.py b/vitallens/constants.py
index 5e57fd8..d33de4b 100644
--- a/vitallens/constants.py
+++ b/vitallens/constants.py
@@ -18,6 +18,10 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
+from dotenv import load_dotenv
+import os
+load_dotenv()
+
 SECONDS_PER_MINUTE = 60.0
 
 # Minima and maxima of derived vitals
@@ -31,3 +35,5 @@
 API_MAX_FRAMES = 900
 API_OVERLAP = 30
 API_URL = "https://api.rouast.com/vitallens-v1"
+if 'API_URL' in os.environ:
+  API_URL = os.getenv('API_URL')