diff --git a/.ci_support/environment-docs.yml b/.ci_support/environment-docs.yml
index 33c2da6e..fa99f06e 100644
--- a/.ci_support/environment-docs.yml
+++ b/.ci_support/environment-docs.yml
@@ -14,7 +14,7 @@ dependencies:
 - cloudpickle =3.1.2
 - h5py =3.16.0
 - jupyter-book =1.0.0
-- mpi4py =4.1.1
+- mpi4py =4.1.2
 - python =3.12
 - pydantic =2.13.4
 - pyzmq =27.1.0
diff --git a/.ci_support/environment-integration.yml b/.ci_support/environment-integration.yml
index 8be209a3..7dd282f5 100644
--- a/.ci_support/environment-integration.yml
+++ b/.ci_support/environment-integration.yml
@@ -3,7 +3,7 @@ channels:
 dependencies:
 - h5py =3.16.0
 - jupyter
-- mpi4py =4.1.1
+- mpi4py =4.1.2
 - numpy =2.3.5
 - openmpi
 - papermill
diff --git a/.ci_support/environment-mpich.yml b/.ci_support/environment-mpich.yml
index 7dd384b6..2b2862b7 100644
--- a/.ci_support/environment-mpich.yml
+++ b/.ci_support/environment-mpich.yml
@@ -9,7 +9,7 @@ dependencies:
 - hatchling =1.29.0
 - hatch-vcs =0.5.0
 - ipython =9.9.0
-- mpi4py =4.1.1
+- mpi4py =4.1.2
 - networkx =3.6.1
 - pydantic =2.13.4
 - pygraphviz =1.14
diff --git a/.ci_support/environment-openmpi.yml b/.ci_support/environment-openmpi.yml
index 3dde66fb..1a2c214a 100644
--- a/.ci_support/environment-openmpi.yml
+++ b/.ci_support/environment-openmpi.yml
@@ -9,7 +9,7 @@ dependencies:
 - hatchling =1.29.0
 - hatch-vcs =0.5.0
 - ipython =9.9.0
-- mpi4py =4.1.1
+- mpi4py =4.1.2
 - networkx =3.6.1
 - pydantic =2.13.4
 - pygraphviz =1.14
diff --git a/.ci_support/environment-win.yml b/.ci_support/environment-win.yml
index 9044a52a..ff277012 100644
--- a/.ci_support/environment-win.yml
+++ b/.ci_support/environment-win.yml
@@ -9,7 +9,7 @@ dependencies:
 - hatchling =1.29.0
 - hatch-vcs =0.5.0
 - ipython =9.9.0
-- mpi4py =4.1.1
+- mpi4py =4.1.2
 - networkx =3.6.1
 - pydantic =2.13.4
 - pygraphviz =1.14
diff --git a/binder/environment.yml b/binder/environment.yml
index 7874f71a..7b0a6e14 100644
--- a/binder/environment.yml
+++ b/binder/environment.yml
@@ -12,7 +12,7 @@ dependencies:
 - h5py =3.16.0
 - ipython =9.9.0
 - matplotlib =3.10.0
-- mpi4py =4.1.1
+- mpi4py =4.1.2
 - networkx =3.6.1
 - pygraphviz =1.14
 - pysqa =0.4.1
diff --git a/pyproject.toml b/pyproject.toml
index 47f04e28..ec5f91eb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -50,7 +50,7 @@ graphnotebook = [
     "networkx==3.6.1",
     "ipython==9.9.0",
 ]
-mpi = ["mpi4py==4.1.1"]
+mpi = ["mpi4py==4.1.2"]
 cluster = [
     "pysqa==0.4.1",
     "h5py==3.16.0",
@@ -59,7 +59,7 @@ validation = [
     "pydantic==2.13.4",
 ]
 all = [
-    "mpi4py==4.1.1",
+    "mpi4py==4.1.2",
     "pysqa==0.4.1",
     "h5py==3.16.0",
     "pydantic==2.13.4",