diff --git a/ci/environment-py3.12.yml b/ci/environment-py3.12.yml
index 1cfd3b0..71cf2d5 100644
--- a/ci/environment-py3.12.yml
+++ b/ci/environment-py3.12.yml
@@ -8,7 +8,7 @@ dependencies:
   - numpy
   - pytest
   - future
-  - zarr >=2.15
+  - zarr >=3.1.3
   - cftime
   - aiohttp
   - pytest-cov
diff --git a/ci/environment-py3.13.yml b/ci/environment-py3.13.yml
index 2b5eebf..c688465 100644
--- a/ci/environment-py3.13.yml
+++ b/ci/environment-py3.13.yml
@@ -8,7 +8,7 @@ dependencies:
   - numpy
   - pytest
   - future
-  - zarr >=2.15
+  - zarr >=3.1.3
   - cftime
   - aiohttp
   - pytest-cov
diff --git a/ci/environment-xarraymaster.yml b/ci/environment-xarraymaster.yml
index 97073b4..c6f9371 100644
--- a/ci/environment-xarraymaster.yml
+++ b/ci/environment-xarraymaster.yml
@@ -7,7 +7,7 @@ dependencies:
   - numpy
   - pytest
   - future
-  - zarr >=2.15
+  - zarr >=3.1.3
   - cftime
   - aiohttp
   - pytest-cov