diff --git a/doc/source/references/release_notes.rst b/doc/source/references/release_notes.rst
index eca48366..5b111efc 100644
--- a/doc/source/references/release_notes.rst
+++ b/doc/source/references/release_notes.rst
@@ -1,8 +1,8 @@
 Release history
 ===============
 
-5.4.0 (unreleased)
-------------------
+5.4.0
+-----
 * [fix] When giving input as a list of netcdf files, the coordinate values are now merged using the `override` strategy, thus the first file with a given dimension define this dimension for all the files.
 * [fix] Fix the output unit of some indices (from "ºC" to "degree_Celsius")
 * [fix] Fixed issued where dataset having a time_bds variable could not be processed by chunking the DataArray(s) instead of the Dataset.
diff --git a/icclim/models/constants.py b/icclim/models/constants.py
index 814d759a..02e23f32 100644
--- a/icclim/models/constants.py
+++ b/icclim/models/constants.py
@@ -3,7 +3,7 @@
 # fmt: off
 # flake8: noqa
 
-ICCLIM_VERSION = "5.3.0"
+ICCLIM_VERSION = "5.4.0"
 
 # placeholder for user_index
 PERCENTILE_THRESHOLD_STAMP = "p"
diff --git a/requirements.txt b/requirements.txt
index 68c0da98..352299b9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,6 +7,7 @@ netCDF4~=1.5.7
 numpy
 pandas
 pandas>=1.3
+psutil
 pytest
 pyyaml
 rechunker>=0.3.3
diff --git a/setup.py b/setup.py
index 6dcc1ac5..ebe35c5e 100644
--- a/setup.py
+++ b/setup.py
@@ -21,7 +21,7 @@
 
 setup(
     name="icclim",
-    version="5.3.0",
+    version="5.4.0",
     packages=find_packages(),
     author="Christian P.",
     author_email="christian.page@cerfacs.fr",