diff --git a/.ci_support/environment-integration.yml b/.ci_support/environment-integration.yml
index 40e55029..fe4a851b 100644
--- a/.ci_support/environment-integration.yml
+++ b/.ci_support/environment-integration.yml
@@ -18,7 +18,7 @@ dependencies:
 - matplotlib =3.10.8
 - networkx =3.6.1
 - pydantic =2.14.1
-- pygraphviz =2.0.3
+- pygraphviz =2.0.4
 - pysqa =1.0.1
 - pyzmq =27.2.0
 - qe =7.5
diff --git a/.ci_support/environment-mpich.yml b/.ci_support/environment-mpich.yml
index bb927e62..19408bed 100644
--- a/.ci_support/environment-mpich.yml
+++ b/.ci_support/environment-mpich.yml
@@ -12,6 +12,6 @@ dependencies:
 - mpi4py =4.1.2
 - networkx =3.6.1
 - pydantic =2.14.1
-- pygraphviz =2.0.3
+- pygraphviz =2.0.4
 - pysqa =1.0.1
 - pyzmq =27.2.0
diff --git a/.ci_support/environment-openmpi.yml b/.ci_support/environment-openmpi.yml
index 76085317..f2204614 100644
--- a/.ci_support/environment-openmpi.yml
+++ b/.ci_support/environment-openmpi.yml
@@ -12,6 +12,6 @@ dependencies:
 - mpi4py =4.1.2
 - networkx =3.6.1
 - pydantic =2.14.1
-- pygraphviz =2.0.3
+- pygraphviz =2.0.4
 - pysqa =1.0.1
 - pyzmq =27.2.0
diff --git a/.ci_support/environment-win.yml b/.ci_support/environment-win.yml
index 1628ac1c..b785c3a5 100644
--- a/.ci_support/environment-win.yml
+++ b/.ci_support/environment-win.yml
@@ -12,5 +12,5 @@ dependencies:
 - mpi4py =4.1.2
 - networkx =3.6.1
 - pydantic =2.14.1
-- pygraphviz =2.0.3
+- pygraphviz =2.0.4
 - pyzmq =27.2.0
diff --git a/binder/environment.yml b/binder/environment.yml
index e20dbd36..ede79fa7 100644
--- a/binder/environment.yml
+++ b/binder/environment.yml
@@ -14,6 +14,6 @@ dependencies:
 - matplotlib =3.10.0
 - mpi4py =4.1.2
 - networkx =3.6.1
-- pygraphviz =2.0.3
+- pygraphviz =2.0.4
 - pysqa =1.0.1
 - pyzmq =27.2.0
diff --git a/pyproject.toml b/pyproject.toml
index bd4c8f40..235e8071 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,11 +43,11 @@ Repository = "https://github.com/pyiron/executorlib"
 [project.optional-dependencies]
 cache = ["h5py==3.16.0"]
 graph = [
-    "pygraphviz==2.0.3",
+    "pygraphviz==2.0.4",
     "networkx==3.6.1",
 ]
 graphnotebook = [
-    "pygraphviz==2.0.3",
+    "pygraphviz==2.0.4",
     "networkx==3.6.1",
     "ipython==9.9.0",
 ]
@@ -64,7 +64,7 @@ all = [
     "pysqa==1.0.1",
     "h5py==3.16.0",
     "pydantic==2.14.1",
-    "pygraphviz==2.0.3",
+    "pygraphviz==2.0.4",
     "networkx==3.6.1",
     "ipython==9.9.0",
 ]