diff --git a/.ci_support/environment-docs.yml b/.ci_support/environment-docs.yml
index f9e9d6e3..bb528005 100644
--- a/.ci_support/environment-docs.yml
+++ b/.ci_support/environment-docs.yml
@@ -10,6 +10,6 @@ dependencies:
 - cloudpickle =3.0.0
 - mpi4py =3.1.6
 - tqdm =4.66.4
-- pyzmq =26.0.2
+- pyzmq =26.0.3
 - flux-core
 - jupyter-book =1.0.0
diff --git a/.ci_support/environment-mpich.yml b/.ci_support/environment-mpich.yml
index 00aa31d3..de4ade4f 100644
--- a/.ci_support/environment-mpich.yml
+++ b/.ci_support/environment-mpich.yml
@@ -7,4 +7,4 @@ dependencies:
 - cloudpickle =3.0.0
 - mpi4py =3.1.6
 - tqdm =4.66.4
-- pyzmq =26.0.2
+- pyzmq =26.0.3
diff --git a/.ci_support/environment-openmpi.yml b/.ci_support/environment-openmpi.yml
index a6cda9ba..a1e8bcf7 100644
--- a/.ci_support/environment-openmpi.yml
+++ b/.ci_support/environment-openmpi.yml
@@ -7,4 +7,4 @@ dependencies:
 - cloudpickle =3.0.0
 - mpi4py =3.1.6
 - tqdm =4.66.4
-- pyzmq =26.0.2
+- pyzmq =26.0.3
diff --git a/.ci_support/environment-win.yml b/.ci_support/environment-win.yml
index 9c633855..8c13d5bb 100644
--- a/.ci_support/environment-win.yml
+++ b/.ci_support/environment-win.yml
@@ -7,4 +7,4 @@ dependencies:
 - cloudpickle =3.0.0
 - mpi4py =3.1.6
 - tqdm =4.66.4
-- pyzmq =26.0.2
+- pyzmq =26.0.3
diff --git a/pyproject.toml b/pyproject.toml
index 5531579e..f0251a9c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,7 +26,7 @@ classifiers = [
 dependencies = [
     "cloudpickle==3.0.0",
     "mpi4py==3.1.6",
-    "pyzmq==26.0.2",
+    "pyzmq==26.0.3",
     "tqdm==4.66.4",
 ]
 dynamic = ["version"]