diff --git a/mac-env.yaml b/mac-env.yaml
index 9178195..c51b0b6 100644
--- a/mac-env.yaml
+++ b/mac-env.yaml
@@ -8,6 +8,7 @@ dependencies:
 - r-base
 - r-shape
 - imagemagick 
+- r-latex2exp
   #- alchemical-analysis=1.0.2
   #- networkx=2.2
   #- pydot=1.2.4