diff --git a/environment.yml b/environment.yml
index e6f9396..3c5f82c 100644
--- a/environment.yml
+++ b/environment.yml
@@ -9,7 +9,7 @@ dependencies:
   - pyjuliacall
   - rmgmolecule >= 0.3
   - rdkit 
-  - pydot
+  - pydot >= 2.0
   - matplotlib
   - numpy
   - jupyter
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