diff --git a/ci/environment.yml b/ci/environment.yml
index e5b52cdd..ffcf8365 100644
--- a/ci/environment.yml
+++ b/ci/environment.yml
@@ -6,7 +6,7 @@ dependencies:
   - python>=3.9
   - codecov
   - h5netcdf
-  - kerchunk
+  - kerchunk==0.2.2
   - netcdf4
   - pydantic
   - pooch