diff --git a/README.md b/README.md
index d6e8cd9731..6411588025 100644
--- a/README.md
+++ b/README.md
@@ -21,13 +21,13 @@ We recommend using either [`miniconda`](https://docs.conda.io/projects/miniconda
 Install a new environment using:
 
 ```sh
-conda create --name cil -c conda-forge -c https://software.repos.intel.com/python/conda -c ccpi cil=24.2.0
+conda create --name cil -c conda-forge -c https://software.repos.intel.com/python/conda -c ccpi cil=24.2.0 ipp=2021.12
 ```
 
 To install CIL and the additional packages and plugins needed to run the [CIL demos](https://github.com/TomographicImaging/CIL-Demos) install the environment with:
 
 ```sh
-conda create --name cil -c conda-forge -c https://software.repos.intel.com/python/conda -c ccpi cil=24.2.0 astra-toolbox=*=cuda* tigre ccpi-regulariser tomophantom ipykernel ipywidgets scikit-image
+conda create --name cil -c conda-forge -c https://software.repos.intel.com/python/conda -c ccpi cil=24.2.0 ipp=2021.12 astra-toolbox=*=cuda* tigre ccpi-regulariser tomophantom ipykernel ipywidgets scikit-image
 ```
 
 where:
diff --git a/recipe/conda_build_config.yaml b/recipe/conda_build_config.yaml
index 28e16d0af2..82f4f59048 100644
--- a/recipe/conda_build_config.yaml
+++ b/recipe/conda_build_config.yaml
@@ -18,6 +18,8 @@
 # Tomas Kulhanek (STFC)
 
 #creates pairs of versions using zip_keys, lists must be the same length
+ipp_version:
+  - '2021.12'
 python:
   - 3.10
   - 3.10
@@ -41,3 +43,4 @@ numpy:
 zip_keys:
   - python
   - numpy
+
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index 26b339bfad..f1b939eb5c 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -47,9 +47,9 @@ requirements:
     - openmp        # [osx]
     - vc 14         # [win]
     - cil-data
-    - ipp-include >=2021.10
-    - ipp-devel >=2021.10
-    - ipp >=2021.10
+    - ipp-include {{ ipp_version }} 
+    - ipp-devel {{ ipp_version }} 
+    - ipp {{ ipp_version }} 
 
   run:
     - python
@@ -67,7 +67,7 @@ requirements:
     - olefile >=0.46
     - pywavelets
     - cil-data >=21.3.0
-    - ipp >=2021.10
+    - {{ pin_compatible('ipp', min_pin='x.x', max_pin='x.x') }}
     - tqdm
     - numba
     - zenodo_get >=1.6
diff --git a/scripts/requirements-test.yml b/scripts/requirements-test.yml
index 17668b73d8..90de773a0f 100644
--- a/scripts/requirements-test.yml
+++ b/scripts/requirements-test.yml
@@ -32,9 +32,9 @@ dependencies:
   - packaging
   - cmake >=3.16
   - setuptools <71
-  - ipp-include >=2021.10
-  - ipp-devel >=2021.10
-  - ipp >=2021.10
+  - ipp-include=2021.12
+  - ipp-devel=2021.12
+  - ipp=2021.12
   - ipywidgets
   - scipy
   - matplotlib