diff --git a/environment.yml b/environment.yml
index 1a5328c..17945db 100644
--- a/environment.yml
+++ b/environment.yml
@@ -3,4 +3,5 @@ channels:
   - conda-forge
 dependencies:
   - dotnet-sdk=8
-  - nodejs=20
\ No newline at end of file
+  - nodejs=20
+  - icu
\ No newline at end of file