diff --git a/.ci_support/environment-mpich.yml b/.ci_support/environment-mpich.yml
index d402acd6..d2244cd4 100644
--- a/.ci_support/environment-mpich.yml
+++ b/.ci_support/environment-mpich.yml
@@ -9,6 +9,6 @@ dependencies:
 - pyzmq =26.2.0
 - h5py =3.11.0
 - matplotlib =3.9.2
-- networkx =3.3
+- networkx =3.4
 - pygraphviz =1.14
 - ipython =8.27.0
diff --git a/.ci_support/environment-openmpi.yml b/.ci_support/environment-openmpi.yml
index b0b1b347..bee7343e 100644
--- a/.ci_support/environment-openmpi.yml
+++ b/.ci_support/environment-openmpi.yml
@@ -9,6 +9,6 @@ dependencies:
 - pyzmq =26.2.0
 - h5py =3.11.0
 - matplotlib =3.9.2
-- networkx =3.3
+- networkx =3.4
 - pygraphviz =1.14
 - ipython =8.27.0
diff --git a/.ci_support/environment-win.yml b/.ci_support/environment-win.yml
index 95385c74..dc5c2c22 100644
--- a/.ci_support/environment-win.yml
+++ b/.ci_support/environment-win.yml
@@ -9,6 +9,6 @@ dependencies:
 - pyzmq =26.2.0
 - h5py =3.11.0
 - matplotlib =3.9.2
-- networkx =3.3
+- networkx =3.4
 - pygraphviz =1.14
 - ipython =8.27.0
diff --git a/pyproject.toml b/pyproject.toml
index a90c741c..8d5cd27c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -42,7 +42,7 @@ hdf = [
 graph = [
     "pygraphviz==1.14",
     "matplotlib==3.9.2",
-    "networkx==3.3",
+    "networkx==3.4",
     "ipython==8.27.0",
 ]