diff --git a/pixi.lock b/pixi.lock
index 84825e0e0e6bf189c342b197e9c6091a94c37afb..0f624af11f635a8bc949d06af2a35a9f94b3aa63 100644
--- a/pixi.lock
+++ b/pixi.lock
@@ -4830,7 +4830,7 @@ packages:
 - pypi: ./
   name: pythermogis
   version: 1.2.0
-  sha256: 856212b888cdabfc02f91671bfc497c663e84dd8a93f714d845e867811ee2cd3
+  sha256: 50c9d857c9314b246b28d7e610647475414c718d839408818aa4f441813b51a7
   requires_dist:
   - jpype1>=1.5.2,<2
   - xarray==2024.9.0.*
@@ -4838,6 +4838,7 @@ packages:
   - pytz>=2024.1,<2025
   - build>=1.2.2.post1,<2
   - pygridsio>=1.0,<2.0
+  - python-dotenv>=1.2.1,<2
   requires_python: '>=3.11'
   editable: true
 - conda: https://conda.anaconda.org/conda-forge/linux-64/python-3.13.3-hf636f53_101_cp313.conda
diff --git a/pyproject.toml b/pyproject.toml
index 620bcb4cf3fb0b75c7ae1a9be0f43e896541ba21..73e4690a10237544fccf468b68b6b676cf48ae6f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,9 @@ dependencies = [
     "pandas>=2.2.3,<3",
     "pytz>=2024.1,<2025",
     "build>=1.2.2.post1,<2",
-    "pygridsio>=1.0,<2.0"]
+    "pygridsio>=1.0,<2.0",
+    "python-dotenv>=1.2.1,<2"
+]
 
 
 [tool.pytest.ini_options]