diff --git a/environment.yml b/environment.yml
index b31578c785..1d1227a180 100644
--- a/environment.yml
+++ b/environment.yml
@@ -18,7 +18,7 @@ dependencies:
   - geopy
   - humanfriendly
   - importlib_resources
-  - iris>=3.4.0
+  - iris >=3.5.0
   - iris-esmf-regrid >=0.6.0  # to work with latest esmpy
   - isodate
   - jinja2
diff --git a/setup.py b/setup.py
index 113bda3ebe..90613be7ab 100755
--- a/setup.py
+++ b/setup.py
@@ -56,7 +56,7 @@
         'pyyaml',
         'requests',
         'scipy>=1.6',
-        'scitools-iris>=3.4.0',
+        'scitools-iris>=3.5.0',
         'shapely[vectorized]',
         'stratify',
         'yamale',