diff --git a/CHANGES.md b/CHANGES.md
index d7064056..e5247f09 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -22,7 +22,7 @@
   - siemens_to_ismrmrd: 8bb8b08f53ce73c2de9ba5f47f1532f96292d92b
   - ISMRMRD: v1.13.2
   - SIRF: v3.5.0
-  - CIL: 0ba2f8e2935db66ec3dfe8c88e407e8d0eb5609f
+  - CIL: v23.1.0
   - CCPi-Regularisation: v22.0.0
   - TomoPhantom: v2.0.0
   
diff --git a/version_config.cmake b/version_config.cmake
index 7c98925a..ae9e9c1f 100644
--- a/version_config.cmake
+++ b/version_config.cmake
@@ -148,7 +148,7 @@ set(DEFAULT_JSON_TAG v3.10.4)
 # CCPi CIL
 # minimum supported version of CIL supported is > 22.1.0 or from commit a6062410028c9872c5b355be40b96ed1497fed2a
 set(DEFAULT_CIL_URL https://github.com/TomographicImaging/CIL.git)
-set(DEFAULT_CIL_TAG 0ba2f8e2935db66ec3dfe8c88e407e8d0eb5609f)
+set(DEFAULT_CIL_TAG v23.1.0)
 
 set(DEFAULT_CCPi-Regularisation-Toolkit_URL https://github.com/vais-ral/CCPi-Regularisation-Toolkit.git)
 set(DEFAULT_CCPi-Regularisation-Toolkit_TAG "v22.0.0")