diff --git a/environment.yml b/environment.yml
index a25cf4c790265ba99599737556f2d6bea05ad112..0de4c51a0910172b6bca203b09fa97c01bb54c6a 100644
--- a/environment.yml
+++ b/environment.yml
@@ -20,7 +20,7 @@ dependencies:
   - psutil 
   - pvl
   - pyproj
-  - pysis
+  - kalasiris
   - pytest
   - python>=3
   - requests
diff --git a/knoten/vis.py b/knoten/vis.py
index d18c4a216931018233c1c21235d573acb395c340..891745fb97d7fc8482decd02f93d2a667437b836 100644
--- a/knoten/vis.py
+++ b/knoten/vis.py
@@ -12,8 +12,8 @@ from numbers import Number
 import numpy as np
 import pandas as pd
 
-from pysis import isis
-from pysis.exceptions import ProcessError
+import kalasiris.pysis as isis
+from kalasiris.pysis import ProcessError
 
 import plotly.graph_objects as go
 import plotly.express as px