diff --git a/.ci_support/environment-mpich.yml b/.ci_support/environment-mpich.yml
index 2fefcb40..4e2df51b 100644
--- a/.ci_support/environment-mpich.yml
+++ b/.ci_support/environment-mpich.yml
@@ -9,6 +9,6 @@ dependencies:
 - pyzmq =26.2.0
 - h5py =3.12.1
 - matplotlib =3.9.2
-- networkx =3.4.1
+- networkx =3.4.2
 - pygraphviz =1.14
 - ipython =8.28.0
diff --git a/.ci_support/environment-openmpi.yml b/.ci_support/environment-openmpi.yml
index 05b20cf7..83df679d 100644
--- a/.ci_support/environment-openmpi.yml
+++ b/.ci_support/environment-openmpi.yml
@@ -9,6 +9,6 @@ dependencies:
 - pyzmq =26.2.0
 - h5py =3.12.1
 - matplotlib =3.9.2
-- networkx =3.4.1
+- networkx =3.4.2
 - pygraphviz =1.14
 - ipython =8.28.0
diff --git a/.ci_support/environment-win.yml b/.ci_support/environment-win.yml
index 82d8a991..610f6b67 100644
--- a/.ci_support/environment-win.yml
+++ b/.ci_support/environment-win.yml
@@ -9,6 +9,6 @@ dependencies:
 - pyzmq =26.2.0
 - h5py =3.12.1
 - matplotlib =3.9.2
-- networkx =3.4.1
+- networkx =3.4.2
 - pygraphviz =1.14
 - ipython =8.28.0
diff --git a/pyproject.toml b/pyproject.toml
index 633558a5..c5d73fd9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -42,7 +42,7 @@ hdf = [
 graph = [
     "pygraphviz==1.14",
     "matplotlib==3.9.2",
-    "networkx==3.4.1",
+    "networkx==3.4.2",
     "ipython==8.28.0",
 ]