diff --git a/.ci_support/environment-docs.yml b/.ci_support/environment-docs.yml
index 6d29b57d..9475c2a3 100644
--- a/.ci_support/environment-docs.yml
+++ b/.ci_support/environment-docs.yml
@@ -17,4 +17,4 @@ dependencies:
 - mpi4py =4.1.2
 - python =3.12
 - pydantic =2.14.2
-- pyzmq =27.2.0
+- pyzmq =27.3.0
diff --git a/.ci_support/environment-integration.yml b/.ci_support/environment-integration.yml
index 5134a364..c60cfe90 100644
--- a/.ci_support/environment-integration.yml
+++ b/.ci_support/environment-integration.yml
@@ -20,5 +20,5 @@ dependencies:
 - pydantic =2.14.2
 - pygraphviz =2.0.4
 - pysqa =1.1.1
-- pyzmq =27.2.0
+- pyzmq =27.3.0
 - qe =7.6
diff --git a/.ci_support/environment-mini.yml b/.ci_support/environment-mini.yml
index 9dd55b44..d2bd4ee2 100644
--- a/.ci_support/environment-mini.yml
+++ b/.ci_support/environment-mini.yml
@@ -6,4 +6,4 @@ dependencies:
 - cloudpickle =3.1.0
 - hatchling =1.33.0
 - hatch-vcs =0.5.0
-- pyzmq =27.2.0
+- pyzmq =27.3.0
diff --git a/.ci_support/environment-mpich.yml b/.ci_support/environment-mpich.yml
index 24735db6..38c6ffd4 100644
--- a/.ci_support/environment-mpich.yml
+++ b/.ci_support/environment-mpich.yml
@@ -14,4 +14,4 @@ dependencies:
 - pydantic =2.14.2
 - pygraphviz =2.0.4
 - pysqa =1.1.1
-- pyzmq =27.2.0
+- pyzmq =27.3.0
diff --git a/.ci_support/environment-openmpi.yml b/.ci_support/environment-openmpi.yml
index c4ed93c8..519234e0 100644
--- a/.ci_support/environment-openmpi.yml
+++ b/.ci_support/environment-openmpi.yml
@@ -14,4 +14,4 @@ dependencies:
 - pydantic =2.14.2
 - pygraphviz =2.0.4
 - pysqa =1.1.1
-- pyzmq =27.2.0
+- pyzmq =27.3.0
diff --git a/.ci_support/environment-win.yml b/.ci_support/environment-win.yml
index 8bb28d0f..5e788c54 100644
--- a/.ci_support/environment-win.yml
+++ b/.ci_support/environment-win.yml
@@ -13,4 +13,4 @@ dependencies:
 - networkx =3.7
 - pydantic =2.14.2
 - pygraphviz =2.0.4
-- pyzmq =27.2.0
+- pyzmq =27.3.0
diff --git a/binder/environment.yml b/binder/environment.yml
index e57f97da..7d3d7189 100644
--- a/binder/environment.yml
+++ b/binder/environment.yml
@@ -16,4 +16,4 @@ dependencies:
 - networkx =3.7
 - pygraphviz =2.0.4
 - pysqa =1.1.1
-- pyzmq =27.2.0
+- pyzmq =27.3.0
diff --git a/pyproject.toml b/pyproject.toml
index 4586463f..ac2fa27a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ requires = [
     "hatchling==1.33.0",
     "hatch-vcs==0.5.0",
     "cloudpickle==3.1.2",
-    "pyzmq==27.2.0",
+    "pyzmq==27.3.0",
 ]
 build-backend = "hatchling.build"
 
@@ -31,7 +31,7 @@ classifiers = [
 ]
 dependencies = [
     "cloudpickle==3.1.2",
-    "pyzmq==27.2.0",
+    "pyzmq==27.3.0",
 ]
 dynamic = ["version"]