diff --git a/.github/workflows/test-snap.yml b/.github/workflows/test-snap.yml
index f44ec3558..1cab1c9b6 100644
--- a/.github/workflows/test-snap.yml
+++ b/.github/workflows/test-snap.yml
@@ -31,7 +31,7 @@ on:
       rabbitmq-charm-channel:
         description: Specify rabbitmq charms channel
         required: true
-        default: 3.12/candidate
+        default: 4.0/candidate
         type: string
       mysql-charm-channel:
         description: Specify mysql charms channel
diff --git a/manifests/2026.1/beta.yml b/manifests/2026.1/beta.yml
index b0fdead57..34990b455 100644
--- a/manifests/2026.1/beta.yml
+++ b/manifests/2026.1/beta.yml
@@ -41,6 +41,8 @@ core:
         channel: 2026.1/beta
         config:
           snap-channel: 2026.1/beta
+      rabbitmq-k8s:
+        channel: 4.0/beta
       microcluster-token-distributor:
         channel: latest/edge
       role-distributor:
diff --git a/manifests/2026.1/candidate.yml b/manifests/2026.1/candidate.yml
index dd68def41..938308dbc 100644
--- a/manifests/2026.1/candidate.yml
+++ b/manifests/2026.1/candidate.yml
@@ -41,6 +41,8 @@ core:
         channel: 2026.1/candidate
         config:
           snap-channel: 2026.1/candidate
+      rabbitmq-k8s:
+        channel: 4.0/candidate
       microcluster-token-distributor:
         channel: latest/edge
       role-distributor:
diff --git a/manifests/2026.1/edge.yml b/manifests/2026.1/edge.yml
index 3b786c864..dad3e484a 100644
--- a/manifests/2026.1/edge.yml
+++ b/manifests/2026.1/edge.yml
@@ -43,6 +43,8 @@ core:
         channel: 2026.1/edge
         config:
           snap-channel: 2026.1/edge
+      rabbitmq-k8s:
+        channel: 4.0/edge
       microcluster-token-distributor:
         channel: v1/stable
       role-distributor:
diff --git a/manifests/2026.1/stable.yml b/manifests/2026.1/stable.yml
index 2cfe57aa0..f5f94ac0b 100644
--- a/manifests/2026.1/stable.yml
+++ b/manifests/2026.1/stable.yml
@@ -43,6 +43,8 @@ core:
         channel: 2026.1/stable
         config:
           snap-channel: 2026.1/stable
+      rabbitmq-k8s:
+        channel: 4.0/stable
       microcluster-token-distributor:
         channel: latest/edge
       role-distributor:
diff --git a/sunbeam-python/sunbeam/versions.py b/sunbeam-python/sunbeam/versions.py
index 7fa1eb779..6c90cd13b 100644
--- a/sunbeam-python/sunbeam/versions.py
+++ b/sunbeam-python/sunbeam/versions.py
@@ -23,7 +23,7 @@ def determine_version() -> str:
 JUJU_CHANNEL = "3.6/stable"
 JUJU_BASE = "ubuntu@24.04"
 OPENSTACK_CHANNEL = f"{determine_version()}/stable"
-RABBITMQ_CHANNEL = "3.12/stable"
+RABBITMQ_CHANNEL = "4.0/stable"
 TRAEFIK_CHANNEL = "latest/stable"
 MICROCEPH_CHANNEL = "tentacle/stable"
 MICROOVN_CHANNEL = "26.03/stable"