diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9e459861..21c1b9e0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,8 @@
   - Set fields `description` to optional in for `Key`, `KeyRing` and `WrappingKey`
 - `logs`: [v0.2.0](services/logs/CHANGELOG.md#v020)
   - **Feature:** Switch from `v1beta` version to `v1` version of the API.
+- `rabbitmq`: [v0.4.0](services/rabbitmq/CHANGELOG.md#v040)
+  - **Breaking Change:** `tls_protocols` on `instance_parameters` is now a list of strings instead of a single string
 - `sfs`: [v0.2.0](services/sfs/CHANGELOG.md#v020)
   - **Feature:** Switch from `v1beta` API version to `v1` version.
   - **Breaking change:** Remove `ListSnapshotSchedules` method
diff --git a/services/rabbitmq/CHANGELOG.md b/services/rabbitmq/CHANGELOG.md
index 538e092a..241ed453 100644
--- a/services/rabbitmq/CHANGELOG.md
+++ b/services/rabbitmq/CHANGELOG.md
@@ -1,3 +1,6 @@
+## v0.4.0
+- **Breaking Change:** `tls_protocols` on `instance_parameters` is now a list of strings instead of a single string
+
 ## v0.3.0
 - **Version**: Minimal version is now python 3.9
 
diff --git a/services/rabbitmq/oas_commit b/services/rabbitmq/oas_commit
new file mode 100644
index 00000000..064e1081
--- /dev/null
+++ b/services/rabbitmq/oas_commit
@@ -0,0 +1 @@
+cfcfc32bc1ae335acecd7bf7ffb60354fdc565ab
diff --git a/services/rabbitmq/pyproject.toml b/services/rabbitmq/pyproject.toml
index 084be68f..89ccaa7e 100644
--- a/services/rabbitmq/pyproject.toml
+++ b/services/rabbitmq/pyproject.toml
@@ -3,7 +3,7 @@ name = "stackit-rabbitmq"
 
 [tool.poetry]
 name = "stackit-rabbitmq"
-version = "v0.3.0"
+version = "v0.4.0"
 authors = [
     "STACKIT Developer Tools <developer-tools@stackit.cloud>",
 ]
diff --git a/services/rabbitmq/src/stackit/rabbitmq/models/instance_parameters.py b/services/rabbitmq/src/stackit/rabbitmq/models/instance_parameters.py
index d45bc4f2..f9ebf346 100644
--- a/services/rabbitmq/src/stackit/rabbitmq/models/instance_parameters.py
+++ b/services/rabbitmq/src/stackit/rabbitmq/models/instance_parameters.py
@@ -62,7 +62,7 @@ class InstanceParameters(BaseModel):
     )
     syslog: Optional[List[StrictStr]] = None
     tls_ciphers: Optional[List[StrictStr]] = Field(default=None, alias="tls-ciphers")
-    tls_protocols: Optional[StrictStr] = Field(default=None, alias="tls-protocols")
+    tls_protocols: Optional[List[StrictStr]] = Field(default=None, alias="tls-protocols")
     __properties: ClassVar[List[str]] = [
         "consumer_timeout",
         "enable_monitoring",
@@ -111,8 +111,9 @@ def tls_protocols_validate_enum(cls, value):
         if value is None:
             return value
 
-        if value not in set(["tlsv1.2", "tlsv1.3"]):
-            raise ValueError("must be one of enum values ('tlsv1.2', 'tlsv1.3')")
+        for i in value:
+            if i not in set(["tlsv1.2", "tlsv1.3"]):
+                raise ValueError("each list item must be one of ('tlsv1.2', 'tlsv1.3')")
         return value
 
     model_config = ConfigDict(