diff --git a/README.rst b/README.rst
index 8cab964..148ff69 100644
--- a/README.rst
+++ b/README.rst
@@ -53,6 +53,12 @@ or the `FRF` module:
 
 	frf_obj = sd.FRF.FRF(sampling_freq, excitation, response)
 
+or the `excitation` module:
+
+.. code-block:: python
+
+    gausian_signal = sd.excitation.random_gaussian((N, PSD, fs))
+
 
 Package integration in SDyPy
 ----------------------------
@@ -64,6 +70,7 @@ the level of integration (see `SEP 1 <https://github.com/sdypy/sdypy/blob/main/d
    - `sdypy-EMA <https://github.com/sdypy/sdypy-EMA>`_ (Experimental Modal Analysis in Python)
    - `sdypy-io <https://github.com/sdypy/sdypy-io>`_ (Input/Output for Structural Dynamics)
    - `sdypy-FRF <https://github.com/sdypy/sdypy-FRF>`_ (Frequency Response Function estimation)
+   - `sdypy-excitation <https://github.com/sdypy/sdypy-excitation>`_ (Excitation signals as used in structural dynamics and vibration fatigue)
 
 - **2nd level** (namespace package in independent repository):
    
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 9dacf64..3ee98b1 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,5 @@
 sdypy-EMA>=0.27
 sdypy-io>=0.1.0
 sdypy-FRF>=0.1
+sdypy-excitation>=0.1.0
 sphinx-rtd-theme
\ No newline at end of file
diff --git a/pyproject.toml b/pyproject.toml
index bb0f390..da5d74f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "sdypy"
-version = "0.3.1"
+version = "0.4.0"
 authors = [{name = "Janko Slavič et al.", email = "janko.slavic@fs.uni-lj.si"}]
 maintainers = [{name = "Janko Slavič et al.", email = "janko.slavic@fs.uni-lj.si"}]
 license = "MIT"
@@ -16,6 +16,7 @@ dependencies = [
 	"sdypy-EMA",
     "sdypy-io",
     "sdypy-FRF",
+    "sdypy-excitation",
 ]
 classifiers = [
     'Development Status :: 5 - Production/Stable',
diff --git a/requirements.txt b/requirements.txt
index d5129f8..fec33ab 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 # Package requirements for users
 sdypy-EMA
 sdypy-io
-sdypy-FRF
\ No newline at end of file
+sdypy-FRF
+sdypy-excitation
\ No newline at end of file
diff --git a/sdypy/__init__.py b/sdypy/__init__.py
index 38049c8..a121a24 100644
--- a/sdypy/__init__.py
+++ b/sdypy/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "0.3.1"
+__version__ = "0.4.0"
 __path__ = __import__('pkgutil').extend_path(__path__, __name__)
 
 from sdypy import EMA