diff --git a/CHANGELOG.md b/CHANGELOG.md
index 66ac636..0da3063 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,10 @@
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.1.2] - 2024-11-20
+### Changed
+- Fixed dynamic age algorithm implementation.
+
 ## [0.1.1] - 2024-10-11
 ### Added
 - Introduced nodes selection based on initial evaluation.
diff --git a/src/nsdlib/algorithms/evaluation/dynamic_age.py b/src/nsdlib/algorithms/evaluation/dynamic_age.py
index 2888886..0490732 100644
--- a/src/nsdlib/algorithms/evaluation/dynamic_age.py
+++ b/src/nsdlib/algorithms/evaluation/dynamic_age.py
@@ -15,7 +15,7 @@ def dynamic_age(network: Graph) -> Dict[int, float]:
     ----------
     - [1] V. Fioriti i M. Chinnici, „Predicting the sources of an outbreak with a spectral technique”, ArXiv12112333 Math-Ph Physicsphysics, lis. 2012, Dostęp: 6 maj 2021. [Online]. Dostępne na: http://arxiv.org/abs/1211.2333
     """
-    A = nx.adjacency_matrix(network).todense().A
+    A = nx.adjacency_matrix(network).todense()
     dynamicAges = {node: 0 for node in network.nodes}
     lamda_max = max(np.linalg.eigvals(A)).real
 
diff --git a/src/nsdlib/version.py b/src/nsdlib/version.py
index 54fc741..54f6c62 100644
--- a/src/nsdlib/version.py
+++ b/src/nsdlib/version.py
@@ -1,3 +1,3 @@
 """nsdlib package version."""
 
-__version__ = "0.1.1"
+__version__ = "0.1.2"