diff --git a/pygmtools/utils.py b/pygmtools/utils.py
index a55bbe3..007a42d 100644
--- a/pygmtools/utils.py
+++ b/pygmtools/utils.py
@@ -1606,7 +1606,7 @@ def from_networkx(G: nx.Graph):
             
     """
     is_directed = isinstance(G, nx.DiGraph)
-    adj_matrix = nx.to_numpy_matrix(G, nodelist=G.nodes()) if is_directed else nx.to_numpy_matrix(G)
+    adj_matrix = nx.to_numpy_array(G, nodelist=G.nodes()) if is_directed else nx.to_numpy_array(G)
     return adj_matrix
 
 
diff --git a/setup.py b/setup.py
index 594470a..5d0ae5d 100644
--- a/setup.py
+++ b/setup.py
@@ -26,7 +26,7 @@ def get_property(prop, project):
 VERSION = get_property('__version__', NAME)
 REQUIRED = [
      'requests>=2.25.1', 'scipy>=1.4.1', 'Pillow>=7.2.0', 'numpy>=1.18.5', 'easydict>=1.7', 'appdirs>=1.4.4', 'tqdm>=4.64.1', 
-     'async-timeout','aiohttp','networkx>=2.8.8'
+     'async-timeout', 'aiohttp', 'networkx>=2.8.8'
 ]
 EXTRAS = {}
 
@@ -52,7 +52,7 @@ def get_property(prop, project):
     
 class BdistWheelCommand(_bdist_wheel):
     def run(self):
-        os.system("python pygmtools/c_astar/get_c_astar.py")
+        os.system("python pygmtools/c_astar_src/build_c_astar.py")
         super().run()
 
     def get_tag(self):
@@ -74,7 +74,7 @@ def get_tag(self):
 class InstallCommand(_install):
     def run(self):
         try:
-            os.system("python pygmtools/c_astar/get_c_astar.py")
+            os.system("python pygmtools/c_astar_src/build_c_astar.py")
         except:
             pass
         _install.run(self)
@@ -89,7 +89,7 @@ def run(self):
     author=AUTHOR,
     url=URL,
     packages=find_packages(exclude=["tests", "*.tests", "*.tests.*", "tests.*"]),
-    package_data={NAME: ['*.pyd', '*.so', 'astar/*']},
+    package_data={NAME: ['*.pyd', '*.so', 'c_astar_src/*']},
     install_requires=REQUIRED,
     extras_require=EXTRAS,
     include_package_data=True,