diff --git a/.ci_support/environment-docs.yml b/.ci_support/environment-docs.yml
index e14dda80..fb7e0ed0 100644
--- a/.ci_support/environment-docs.yml
+++ b/.ci_support/environment-docs.yml
@@ -9,7 +9,7 @@ dependencies:
 - openmpi
 - cloudpickle =3.1.1
 - mpi4py =4.0.1
-- pyzmq =26.2.0
+- pyzmq =26.2.1
 - flux-core
 - jupyter-book =1.0.0
 - h5py =3.12.1
diff --git a/.ci_support/environment-mpich.yml b/.ci_support/environment-mpich.yml
index e3468cd2..6a3966bf 100644
--- a/.ci_support/environment-mpich.yml
+++ b/.ci_support/environment-mpich.yml
@@ -6,7 +6,7 @@ dependencies:
 - mpich
 - cloudpickle =3.1.1
 - mpi4py =4.0.1
-- pyzmq =26.2.0
+- pyzmq =26.2.1
 - h5py =3.12.1
 - networkx =3.4.2
 - pygraphviz =1.14
diff --git a/.ci_support/environment-openmpi.yml b/.ci_support/environment-openmpi.yml
index d797eac4..f3060009 100644
--- a/.ci_support/environment-openmpi.yml
+++ b/.ci_support/environment-openmpi.yml
@@ -6,7 +6,7 @@ dependencies:
 - openmpi
 - cloudpickle =3.1.1
 - mpi4py =4.0.1
-- pyzmq =26.2.0
+- pyzmq =26.2.1
 - h5py =3.12.1
 - networkx =3.4.2
 - pygraphviz =1.14
diff --git a/.ci_support/environment-win.yml b/.ci_support/environment-win.yml
index b71efab3..bb72eb93 100644
--- a/.ci_support/environment-win.yml
+++ b/.ci_support/environment-win.yml
@@ -6,7 +6,7 @@ dependencies:
 - msmpi
 - cloudpickle =3.1.1
 - mpi4py =4.0.1
-- pyzmq =26.2.0
+- pyzmq =26.2.1
 - h5py =3.12.1
 - networkx =3.4.2
 - pygraphviz =1.14
diff --git a/binder/environment.yml b/binder/environment.yml
index 28f2f041..2ea3577a 100644
--- a/binder/environment.yml
+++ b/binder/environment.yml
@@ -6,7 +6,7 @@ dependencies:
 - openmpi
 - cloudpickle =3.1.1
 - mpi4py =4.0.1
-- pyzmq =26.2.0
+- pyzmq =26.2.1
 - flux-core =0.59.0
 - flux-pmix =0.5.0
 - versioneer =0.28
diff --git a/pyproject.toml b/pyproject.toml
index 23790b41..ff95a0a7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,7 +26,7 @@ classifiers = [
 ]
 dependencies = [
     "cloudpickle==3.1.1",
-    "pyzmq==26.2.0",
+    "pyzmq==26.2.1",
 ]
 dynamic = ["version"]