diff --git a/README.md b/README.md
index 22132c5..68d24c4 100644
--- a/README.md
+++ b/README.md
@@ -269,6 +269,9 @@ documentation is directly included in the source file docstrings.
 * Alternative contact : nuno.brum@gmail.com
 
 ## History ##
+* Version 4.0.2\
+  Changing list of Library dependencies.
+
 * Version 4.0.1\
   Bug fix on CLI for the Histogram.py and LTSteps.py
 
diff --git a/pyproject.toml b/pyproject.toml
index 6d8bbf5..acb3bae 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ requires = [
 build-backend = "setuptools.build_meta"
 [project]
 name = "PyLTSpice"
-version = "4.0.1"
+version = "4.0.2"
 authors = [
   { name="Nuno Brum", email="me@nunobrum.com" },
 ]
@@ -15,7 +15,8 @@ readme = "README.md"
 license = { file="LICENSE" }
 requires-python = ">=3.7"
 dependencies = [
-    "numpy==1.21",
+    "numpy",
+    "scipy",
     "psutil",
     "clipboard",
     "matplotlib"