diff --git a/.ci_support/environment-docs.yml b/.ci_support/environment-docs.yml
index 4e6c6e7f..2091f02d 100644
--- a/.ci_support/environment-docs.yml
+++ b/.ci_support/environment-docs.yml
@@ -14,5 +14,5 @@ dependencies:
 - pyzmq =26.4.0
 - flux-core
 - jupyter-book =1.0.0
-- h5py =3.13.0
+- h5py =3.14.0
 - python =3.12
diff --git a/.ci_support/environment-mpich.yml b/.ci_support/environment-mpich.yml
index ff3ffbb6..3d89276f 100644
--- a/.ci_support/environment-mpich.yml
+++ b/.ci_support/environment-mpich.yml
@@ -7,7 +7,7 @@ dependencies:
 - cloudpickle =3.1.1
 - mpi4py =4.0.1
 - pyzmq =26.4.0
-- h5py =3.13.0
+- h5py =3.14.0
 - networkx =3.4.2
 - pygraphviz =1.14
 - ipython =9.0.2
diff --git a/.ci_support/environment-openmpi.yml b/.ci_support/environment-openmpi.yml
index 46d134a5..ed1af3e4 100644
--- a/.ci_support/environment-openmpi.yml
+++ b/.ci_support/environment-openmpi.yml
@@ -7,7 +7,7 @@ dependencies:
 - cloudpickle =3.1.1
 - mpi4py =4.0.1
 - pyzmq =26.4.0
-- h5py =3.13.0
+- h5py =3.14.0
 - networkx =3.4.2
 - pygraphviz =1.14
 - pysqa =0.2.6
diff --git a/.ci_support/environment-win.yml b/.ci_support/environment-win.yml
index 2b20ba79..790ed115 100644
--- a/.ci_support/environment-win.yml
+++ b/.ci_support/environment-win.yml
@@ -7,7 +7,7 @@ dependencies:
 - cloudpickle =3.1.1
 - mpi4py =4.0.1
 - pyzmq =26.4.0
-- h5py =3.13.0
+- h5py =3.14.0
 - networkx =3.4.2
 - pygraphviz =1.14
 - ipython =9.0.2
diff --git a/pyproject.toml b/pyproject.toml
index 61633e38..6f68afdb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,7 +41,7 @@ Documentation = "https://executorlib.readthedocs.io"
 Repository = "https://github.com/pyiron/executorlib"
 
 [project.optional-dependencies]
-cache = ["h5py==3.13.0"]
+cache = ["h5py==3.14.0"]
 graph = [
     "pygraphviz==1.14",
     "networkx==3.4.2",
@@ -54,12 +54,12 @@ graphnotebook = [
 mpi = ["mpi4py==4.0.1"]
 cluster = [
     "pysqa==0.2.6",
-    "h5py==3.13.0",
+    "h5py==3.14.0",
 ]
 all = [
     "mpi4py==4.0.1",
     "pysqa==0.2.6",
-    "h5py==3.13.0",
+    "h5py==3.14.0",
     "pygraphviz==1.14",
     "networkx==3.4.2",
     "ipython==9.0.2",