diff --git a/CHANGELOG.md b/CHANGELOG.md
index 23d3dc8a..e18e1121 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## Release (2026-MM-DD)
+- `iaas`: [v1.2.2](services/iaas/CHANGELOG.md#v122)
+  - **Docs:** Extend description of `PortRange` class
+
 ## Release (2026-03-27)
 
 - `auditlog`: [v0.1.2](services/auditlog/CHANGELOG.md#v012)
diff --git a/services/iaas/CHANGELOG.md b/services/iaas/CHANGELOG.md
index efa04d40..6568fe19 100644
--- a/services/iaas/CHANGELOG.md
+++ b/services/iaas/CHANGELOG.md
@@ -1,3 +1,6 @@
+## v1.2.2
+- **Docs:** Extend description of `PortRange` class
+
 ## v1.2.1
 - **Feature:** client now supports UUID and decimal types
 - **Bugfix:** timeouts now passed to requests library
diff --git a/services/iaas/oas_commit b/services/iaas/oas_commit
index e3713dde..a978700c 100644
--- a/services/iaas/oas_commit
+++ b/services/iaas/oas_commit
@@ -1 +1 @@
-0e64886dd0847341800d7191ed193b75413be998
+467fe4d305e48699c34835e45fd1c7b486be01d2
diff --git a/services/iaas/pyproject.toml b/services/iaas/pyproject.toml
index 37a93e43..3d3beb34 100644
--- a/services/iaas/pyproject.toml
+++ b/services/iaas/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "stackit-iaas"
-version = "v1.2.1"
+version = "v1.2.2"
 description = "IaaS-API"
 authors = [{ name = "STACKIT Developer Tools", email = "developer-tools@stackit.cloud" }]
 requires-python = ">=3.9,<4.0"
diff --git a/services/iaas/src/stackit/iaas/models/port_range.py b/services/iaas/src/stackit/iaas/models/port_range.py
index 3b6c9533..f1efa9ba 100644
--- a/services/iaas/src/stackit/iaas/models/port_range.py
+++ b/services/iaas/src/stackit/iaas/models/port_range.py
@@ -24,7 +24,7 @@
 
 class PortRange(BaseModel):
     """
-    Object that represents a range of ports.
+    Object that represents a range of ports (this will be omitted if it covers the full default range 0/1-65535).
     """  # noqa: E501
 
     max: Annotated[int, Field(le=65535, strict=True, ge=0)] = Field(