diff --git a/AGENTS.md b/AGENTS.md
index 236cc60..e7d942c 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -9,8 +9,7 @@ request against it.
 Each chart lives in `charts/<name>/`:
 
 - `infrahub`: the community chart. It holds the templates of the Infrahub server, the task workers
-  and the jobs, and installs Neo4j, Redis, RabbitMQ, NATS and the Prefect server from upstream
-  charts.
+  and the jobs, and installs Neo4j, Redis, RabbitMQ and the Prefect server from upstream charts.
 - `infrahub-enterprise`: wraps the `infrahub` chart and sets its values under the `infrahub:` key.
   Its own templates only check the values and print the install notes. It holds the size presets
   (`values.small.yaml`, `values.medium*.yaml`, `values.large*.yaml`) and `values.openshift.yaml`.
diff --git a/charts/infrahub-enterprise/changelog/+remove-nats.removed.md b/charts/infrahub-enterprise/changelog/+remove-nats.removed.md
new file mode 100644
index 0000000..d35a506
--- /dev/null
+++ b/charts/infrahub-enterprise/changelog/+remove-nats.removed.md
@@ -0,0 +1 @@
+The `infrahub` dependency no longer includes the `nats` subchart or the `infrahub.nats` values, because Infrahub no longer supports NATS for the message bus or the cache ([opsmill/infrahub#11210](https://github.com/opsmill/infrahub/pull/11210)). Infrahub used NATS only when `INFRAHUB_BROKER_DRIVER` or `INFRAHUB_CACHE_DRIVER` was set to `nats`. If your values set `infrahub.nats.enabled: true`, set the message bus to `rabbitmq` and the cache to `redis` before you upgrade the chart, because the upgrade removes the NATS server.
diff --git a/charts/infrahub/Chart.yaml b/charts/infrahub/Chart.yaml
index a55f9db..407f452 100644
--- a/charts/infrahub/Chart.yaml
+++ b/charts/infrahub/Chart.yaml
@@ -42,10 +42,6 @@ dependencies:
     version: "14.4.1"
     repository: "oci://registry-1.docker.io/bitnamicharts"
     condition: rabbitmq.enabled
-  - name: nats
-    version: "1.1.12"
-    repository: "https://nats-io.github.io/k8s/helm/charts/"
-    condition: nats.enabled
   - name: prefect-server
     version: "2026.10.21032730"
     repository: "https://prefecthq.github.io/prefect-helm"
diff --git a/charts/infrahub/README.md b/charts/infrahub/README.md
index 3872a5d..f1aaa7b 100644
--- a/charts/infrahub/README.md
+++ b/charts/infrahub/README.md
@@ -56,7 +56,6 @@ The chart offers the ability to configure persistence for the database and other
 | Repository | Name | Version |
 |------------|------|---------|
 | https://helm.neo4j.com/neo4j/ | neo4j | 2026.5.0 |
-| https://nats-io.github.io/k8s/helm/charts/ | nats | 1.1.12 |
 | https://prefecthq.github.io/prefect-helm | prefect-server | 2026.10.21032730 |
 | oci://registry-1.docker.io/bitnamicharts | common | 2.23.0 |
 | oci://registry-1.docker.io/bitnamicharts | rabbitmq | 14.4.1 |
@@ -188,8 +187,6 @@ The chart offers the ability to configure persistence for the database and other
 | infrahubTaskWorker.revisionHistoryLimit | int | `10` | Revision history limit for the task worker Deployment |
 | infrahubTaskWorker.tolerations | list | `[]` | Tolerations for the task worker pods |
 | infrahubTaskWorker.topologySpreadConstraints | list | `[]` | Topology spread constraints for the task worker pods |
-| nats.config.jetstream.enabled | bool | `true` |  |
-| nats.enabled | bool | `false` |  |
 | neo4j.config."dbms.security.auth_minimum_password_length" | string | `"4"` |  |
 | neo4j.config."dbms.security.procedures.unrestricted" | string | `"apoc.*"` |  |
 | neo4j.enabled | bool | `true` |  |
diff --git a/charts/infrahub/changelog/+remove-nats.removed.md b/charts/infrahub/changelog/+remove-nats.removed.md
new file mode 100644
index 0000000..938d14f
--- /dev/null
+++ b/charts/infrahub/changelog/+remove-nats.removed.md
@@ -0,0 +1 @@
+Removed the `nats` subchart and the `nats` values, because Infrahub no longer supports NATS for the message bus or the cache ([opsmill/infrahub#11210](https://github.com/opsmill/infrahub/pull/11210)). Infrahub used NATS only when `INFRAHUB_BROKER_DRIVER` or `INFRAHUB_CACHE_DRIVER` was set to `nats`. If your values set `nats.enabled: true`, set the message bus to `rabbitmq` and the cache to `redis` before you upgrade the chart, because the upgrade removes the NATS server.
diff --git a/charts/infrahub/values.yaml b/charts/infrahub/values.yaml
index abe165a..c1eadb8 100644
--- a/charts/infrahub/values.yaml
+++ b/charts/infrahub/values.yaml
@@ -403,13 +403,6 @@ rabbitmq:
   startupProbe:
     enabled: true
 
-# ----------- NATS Server -----------
-nats:
-  enabled: false
-  config:
-    jetstream:
-      enabled: true
-
 # ------------- Prefect -------------
 prefect-server:
   enabled: true
diff --git a/tests/e2e/test_tracing_optout.py b/tests/e2e/test_tracing_optout.py
index b016578..a7f9bda 100644
--- a/tests/e2e/test_tracing_optout.py
+++ b/tests/e2e/test_tracing_optout.py
@@ -39,7 +39,6 @@
     "neo4j.enabled": "false",
     "rabbitmq.enabled": "false",
     "redis.enabled": "false",
-    "nats.enabled": "false",
     "prefect-server.enabled": "false",
 }