diff --git a/.ci_support/environment-docs.yml b/.ci_support/environment-docs.yml
index b6c7b3f1..16b9eaad 100644
--- a/.ci_support/environment-docs.yml
+++ b/.ci_support/environment-docs.yml
@@ -7,9 +7,9 @@ dependencies:
 - myst-parser
 - numpy
 - openmpi
-- cloudpickle =3.0.0
+- cloudpickle =3.1.0
 - mpi4py =4.0.1
 - pyzmq =26.2.0
 - flux-core
 - jupyter-book =1.0.0
-- h5py =3.11.0
\ No newline at end of file
+- h5py =3.11.0
diff --git a/.ci_support/environment-mini.yml b/.ci_support/environment-mini.yml
index 1476c501..f2194ddf 100644
--- a/.ci_support/environment-mini.yml
+++ b/.ci_support/environment-mini.yml
@@ -3,5 +3,5 @@ channels:
 dependencies:
 - python
 - numpy
-- cloudpickle =3.0.0
+- cloudpickle =3.1.0
 - pyzmq =26.0.3
diff --git a/.ci_support/environment-mpich.yml b/.ci_support/environment-mpich.yml
index 115d5da9..63131d78 100644
--- a/.ci_support/environment-mpich.yml
+++ b/.ci_support/environment-mpich.yml
@@ -4,7 +4,7 @@ dependencies:
 - python
 - numpy
 - mpich
-- cloudpickle =3.0.0
+- cloudpickle =3.1.0
 - mpi4py =4.0.1
 - pyzmq =26.2.0
 - h5py =3.11.0
diff --git a/.ci_support/environment-openmpi.yml b/.ci_support/environment-openmpi.yml
index 7f6c4df0..c31b932a 100644
--- a/.ci_support/environment-openmpi.yml
+++ b/.ci_support/environment-openmpi.yml
@@ -4,7 +4,7 @@ dependencies:
 - python
 - numpy
 - openmpi
-- cloudpickle =3.0.0
+- cloudpickle =3.1.0
 - mpi4py =4.0.1
 - pyzmq =26.2.0
 - h5py =3.11.0
diff --git a/.ci_support/environment-win.yml b/.ci_support/environment-win.yml
index 69f8c7ef..5b4aa848 100644
--- a/.ci_support/environment-win.yml
+++ b/.ci_support/environment-win.yml
@@ -4,7 +4,7 @@ dependencies:
 - python
 - numpy
 - msmpi
-- cloudpickle =3.0.0
+- cloudpickle =3.1.0
 - mpi4py =4.0.1
 - pyzmq =26.2.0
 - h5py =3.11.0
diff --git a/binder/environment.yml b/binder/environment.yml
index 879d65f3..2486872f 100644
--- a/binder/environment.yml
+++ b/binder/environment.yml
@@ -4,7 +4,7 @@ dependencies:
 - python
 - numpy
 - openmpi
-- cloudpickle =3.0.0
+- cloudpickle =3.1.0
 - mpi4py =3.1.6
 - pyzmq =26.0.0
 - flux-core =0.59.0
diff --git a/pyproject.toml b/pyproject.toml
index 14357aee..0dadb98b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,7 +24,7 @@ classifiers = [
     "Programming Language :: Python :: 3.12",
 ]
 dependencies = [
-    "cloudpickle==3.0.0",
+    "cloudpickle==3.1.0",
     "pyzmq==26.2.0",
 ]
 dynamic = ["version"]