diff --git a/.github/environment.yml b/.github/environment.yml
index 981495c..c8fcf32 100644
--- a/.github/environment.yml
+++ b/.github/environment.yml
@@ -11,4 +11,4 @@ dependencies:
   - pytest
   - vtk
   - pyevtk
-  - swig
\ No newline at end of file
+  - swig==4.2.1
\ No newline at end of file