diff --git a/CHANGELOG.md b/CHANGELOG.md
index 92cde5e30..3c63bda31 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,8 @@
   - **Feature:** Add response `IntakeRunnerResponse` to `UpdateIntakeRunnerExecute` request
   - **Feature:** Add response `IntakeUserResponse` to `UpdateIntakeUserExecute` request
 - `stackitmarketplace`:
+  - [v1.12.0](services/stackitmarketplace/CHANGELOG.md#v1120)
+    - **Breaking Change:** Change `logo` field type from `Union[StrictBytes, StrictStr]` to `StrictStr` in `CatalogProductDetail`, `CatalogProductDetailsVendor`, and `CatalogProductOverview` models
   - [v1.11.0](services/stackitmarketplace/CHANGELOG.md#v1110)
     - **Feature:** Add new field `DemoUrl` to `CatalogProductDetail` model
   - [v1.10.0](services/stackitmarketplace/CHANGELOG.md#v1100)
diff --git a/services/stackitmarketplace/CHANGELOG.md b/services/stackitmarketplace/CHANGELOG.md
index 71778a32e..65b308f90 100644
--- a/services/stackitmarketplace/CHANGELOG.md
+++ b/services/stackitmarketplace/CHANGELOG.md
@@ -1,3 +1,6 @@
+## v1.12.0
+- **Breaking Change:** Change `logo` field type from `Union[StrictBytes, StrictStr]` to `StrictStr` in `CatalogProductDetail`, `CatalogProductDetailsVendor`, and `CatalogProductOverview` models
+
 ## v1.11.0
 - **Feature:** Add new field `DemoUrl` to `CatalogProductDetail` model
 
diff --git a/services/stackitmarketplace/pyproject.toml b/services/stackitmarketplace/pyproject.toml
index 76c8352ed..fd732558a 100644
--- a/services/stackitmarketplace/pyproject.toml
+++ b/services/stackitmarketplace/pyproject.toml
@@ -3,7 +3,7 @@ name = "stackit-stackitmarketplace"
 
 [tool.poetry]
 name = "stackit-stackitmarketplace"
-version = "v1.11.0"
+version = "v1.12.0"
 authors = [
     "STACKIT Developer Tools <developer-tools@stackit.cloud>",
 ]
diff --git a/services/stackitmarketplace/src/stackit/stackitmarketplace/models/catalog_product_detail.py b/services/stackitmarketplace/src/stackit/stackitmarketplace/models/catalog_product_detail.py
index 2d2563779..927b47648 100644
--- a/services/stackitmarketplace/src/stackit/stackitmarketplace/models/catalog_product_detail.py
+++ b/services/stackitmarketplace/src/stackit/stackitmarketplace/models/catalog_product_detail.py
@@ -17,14 +17,13 @@
 import json
 import pprint
 import re  # noqa: F401
-from typing import Any, ClassVar, Dict, List, Optional, Set, Union
+from typing import Any, ClassVar, Dict, List, Optional, Set
 
 from pydantic import (
     BaseModel,
     ConfigDict,
     Field,
     StrictBool,
-    StrictBytes,
     StrictStr,
     field_validator,
 )
@@ -81,7 +80,7 @@ class CatalogProductDetail(BaseModel):
         alias="isProductListing",
     )
     lifecycle_state: ProductLifecycleState = Field(alias="lifecycleState")
-    logo: Union[StrictBytes, StrictStr] = Field(description="The logo base64 encoded.")
+    logo: StrictStr = Field(description="The logo information.")
     name: Annotated[str, Field(strict=True, max_length=512)] = Field(description="The name of the product.")
     offer_type: OfferType = Field(alias="offerType")
     pricing_options: List[CatalogProductPricingOption] = Field(
diff --git a/services/stackitmarketplace/src/stackit/stackitmarketplace/models/catalog_product_details_vendor.py b/services/stackitmarketplace/src/stackit/stackitmarketplace/models/catalog_product_details_vendor.py
index f09574b5b..be367953b 100644
--- a/services/stackitmarketplace/src/stackit/stackitmarketplace/models/catalog_product_details_vendor.py
+++ b/services/stackitmarketplace/src/stackit/stackitmarketplace/models/catalog_product_details_vendor.py
@@ -17,16 +17,9 @@
 import json
 import pprint
 import re  # noqa: F401
-from typing import Any, ClassVar, Dict, List, Optional, Set, Union
-
-from pydantic import (
-    BaseModel,
-    ConfigDict,
-    Field,
-    StrictBytes,
-    StrictStr,
-    field_validator,
-)
+from typing import Any, ClassVar, Dict, List, Optional, Set
+
+from pydantic import BaseModel, ConfigDict, Field, StrictStr, field_validator
 from typing_extensions import Annotated, Self
 
 
@@ -36,7 +29,7 @@ class CatalogProductDetailsVendor(BaseModel):
     """  # noqa: E501
 
     description: StrictStr = Field(description="The vendor description.")
-    logo: Union[StrictBytes, StrictStr] = Field(description="The logo base64 encoded.")
+    logo: StrictStr = Field(description="The logo information.")
     name: Annotated[str, Field(strict=True, max_length=512)] = Field(description="The product's vendor name.")
     vendor_id: Annotated[str, Field(min_length=36, strict=True, max_length=36)] = Field(
         description="Universally Unique Identifier (UUID).", alias="vendorId"
diff --git a/services/stackitmarketplace/src/stackit/stackitmarketplace/models/catalog_product_overview.py b/services/stackitmarketplace/src/stackit/stackitmarketplace/models/catalog_product_overview.py
index aa8e8d2a1..71a47beb9 100644
--- a/services/stackitmarketplace/src/stackit/stackitmarketplace/models/catalog_product_overview.py
+++ b/services/stackitmarketplace/src/stackit/stackitmarketplace/models/catalog_product_overview.py
@@ -17,16 +17,9 @@
 import json
 import pprint
 import re  # noqa: F401
-from typing import Any, ClassVar, Dict, List, Optional, Set, Union
-
-from pydantic import (
-    BaseModel,
-    ConfigDict,
-    Field,
-    StrictBytes,
-    StrictStr,
-    field_validator,
-)
+from typing import Any, ClassVar, Dict, List, Optional, Set
+
+from pydantic import BaseModel, ConfigDict, Field, StrictStr, field_validator
 from typing_extensions import Annotated, Self
 
 from stackit.stackitmarketplace.models.catalog_product_overview_vendor import (
@@ -47,7 +40,7 @@ class CatalogProductOverview(BaseModel):
     delivery_method: DeliveryMethod = Field(alias="deliveryMethod")
     free_trial: Optional[FreeTrial] = Field(default=None, alias="freeTrial")
     lifecycle_state: ProductLifecycleState = Field(alias="lifecycleState")
-    logo: Optional[Union[StrictBytes, StrictStr]] = Field(default=None, description="The logo base64 encoded.")
+    logo: Optional[StrictStr] = Field(default=None, description="The logo information.")
     name: Annotated[str, Field(strict=True, max_length=512)] = Field(description="The name of the product.")
     product_id: Annotated[str, Field(min_length=10, strict=True, max_length=29)] = Field(
         description="The user-readable product ID.", alias="productId"