diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 2e4d195c1c..9c3157c50b 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -7,20 +7,13 @@ version: 2
 
 # Set the version of Python and other tools you might need
 build:
-  os: ubuntu-22.04
+  os: ubuntu-lts-latest
   tools:
-    # updated and deployed from Aug 1, 2023
-    python: "mambaforge-22.9"
+    # try miniforge3 when available? see github.com/ESMValGroup/ESMValCore/issues/2557
+    # DO NOT use mambaforge-*; that is currently sunsetted
+    python: "miniconda-latest"
   jobs:
-    pre_create_environment:
-      # update mamba just in case
-      - mamba update --yes --quiet --name=base mamba 'zstd=1.5.2'
-      - mamba --version
-      - mamba list --name=base
     post_create_environment:
-      - conda run -n ${CONDA_DEFAULT_ENV} mamba list
-      # use conda run executable wrapper to have all env variables
-      - conda run -n ${CONDA_DEFAULT_ENV} mamba --version
       - conda run -n ${CONDA_DEFAULT_ENV} pip install . --no-deps
 
 # Declare the requirements required to build your docs
diff --git a/CITATION.cff b/CITATION.cff
index dbe365840a..c3621129bd 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -210,11 +210,11 @@ authors:
     given-names: Diego
 
 cff-version: 1.2.0
-date-released: 2024-07-03
+date-released: 2024-11-26
 doi: "10.5281/zenodo.3387139"
 license: "Apache-2.0"
 message: "If you use this software, please cite it using these metadata."
 repository-code: "https://github.com/ESMValGroup/ESMValCore/"
 title: ESMValCore
-version: "v2.11.0"
+version: "v2.11.1"
 ...
diff --git a/doc/changelog.rst b/doc/changelog.rst
index ad104a7b7d..683935113e 100644
--- a/doc/changelog.rst
+++ b/doc/changelog.rst
@@ -3,6 +3,37 @@
 Changelog
 =========
 
+.. _changelog-v2-11-1:
+
+v2.11.1
+-------
+Highlights
+
+This is a bugfix release which enables lazy computations in more preprocessors
+and allows installing the latests version of various dependencies, including
+Iris (`v3.11.0 <https://github.com/SciTools/iris/releases/tag/v3.11.0>`__).
+
+This release includes
+
+Computational performance improvements
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+-  Optimize functions ``mask_landsea()``, ``mask_landseaice()`` and ``calculate_volume()`` for lazy input (:pull:`2515`) by :user:`schlunma`
+
+Installation
+~~~~~~~~~~~~
+
+-  Remove support for Python 3.9 (:pull:`2447`) by :user:`valeriupredoi`
+-  Switch to new iris >= 3.10.0 API (:pull:`2500`) by :user:`schlunma`
+-  Pin dask to avoid 2024.8.0 - problems with masked fill/missing values (:pull:`2504`) by :user:`valeriupredoi`
+-  Fix rounding of Pandas datetimes in ICON CMORizer to allow installing latest Pandas version (:pull:`2529`) by :user:`valeriupredoi`
+
+Automatic testing
+~~~~~~~~~~~~~~~~~
+
+-  Fix type hint for new mypy version (:pull:`2497`) by :user:`schlunma`
+-  Reformat datetime strings be in line with new ``isodate==0.7.0`` and actual ISO8601 and pin ``isodate>=0.7.0`` (:pull:`2546`) by :user:`valeriupredoi`
+
 .. _changelog-v2-11-0:
 
 v2.11.0
diff --git a/environment.yml b/environment.yml
index ae46c07178..eae3682453 100644
--- a/environment.yml
+++ b/environment.yml
@@ -18,7 +18,7 @@ dependencies:
   - fire
   - geopy
   - humanfriendly
-  - iris >=3.10.0
+  - iris >=3.11.0
   - iris-esmf-regrid >=0.11.0
   - isodate >=0.7.0  # incompatible with very old 0.6.1
   - jinja2
diff --git a/setup.py b/setup.py
index 416b847633..6b9f8a1770 100755
--- a/setup.py
+++ b/setup.py
@@ -55,7 +55,7 @@
         'pyyaml',
         'requests',
         'scipy>=1.6',
-        'scitools-iris>=3.10.0',
+        'scitools-iris>=3.11.0',
         'shapely>=2.0.0',
         'stratify>=0.3',
         'yamale',