diff --git a/fern/apis/petstore/generators.yml b/fern/apis/petstore/generators.yml
new file mode 100644
index 000000000..bc9a333a3
--- /dev/null
+++ b/fern/apis/petstore/generators.yml
@@ -0,0 +1,3 @@
+api:
+  specs:
+    - openapi: openapi.yml
diff --git a/fern/apis/petstore/openapi.yml b/fern/apis/petstore/openapi.yml
new file mode 100644
index 000000000..8e1495464
--- /dev/null
+++ b/fern/apis/petstore/openapi.yml
@@ -0,0 +1,125 @@
+openapi: 3.1.0
+info:
+  title: Petstore API
+  version: 1.0.0
+  description: |
+    A small example API used to demonstrate localized OpenAPI documentation in
+    Fern. The schema and operation shape match the Chinese-translated copy at
+    `fern/translations/zh/apis/petstore/openapi.yml`; only `summary` and
+    `description` strings differ between the two.
+servers:
+  - url: https://petstore.example.com/api
+    description: Production server
+tags:
+  - name: pets
+    description: Operations for managing pets in the store.
+paths:
+  /pets:
+    get:
+      operationId: listPets
+      tags:
+        - pets
+      summary: List pets
+      description: Returns a paginated list of pets in the store.
+      parameters:
+        - name: limit
+          in: query
+          description: Maximum number of pets to return in a single page.
+          required: false
+          schema:
+            type: integer
+            format: int32
+            minimum: 1
+            maximum: 100
+            default: 20
+      responses:
+        "200":
+          description: A page of pets.
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: "#/components/schemas/Pet"
+    post:
+      operationId: createPet
+      tags:
+        - pets
+      summary: Create a pet
+      description: Adds a new pet to the store.
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              $ref: "#/components/schemas/NewPet"
+      responses:
+        "201":
+          description: The pet was created successfully.
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pet"
+  /pets/{petId}:
+    get:
+      operationId: getPet
+      tags:
+        - pets
+      summary: Get a pet by ID
+      description: Returns a single pet identified by its unique ID.
+      parameters:
+        - name: petId
+          in: path
+          description: The unique identifier of the pet.
+          required: true
+          schema:
+            type: string
+      responses:
+        "200":
+          description: The requested pet.
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pet"
+        "404":
+          description: No pet was found with the given ID.
+components:
+  schemas:
+    Pet:
+      type: object
+      required:
+        - id
+        - name
+        - species
+      properties:
+        id:
+          type: string
+          description: Unique identifier for the pet.
+        name:
+          type: string
+          description: The pet's display name.
+        species:
+          type: string
+          description: The pet's species, such as "dog" or "cat".
+        tags:
+          type: array
+          description: Optional tags used to categorize the pet.
+          items:
+            type: string
+    NewPet:
+      type: object
+      required:
+        - name
+        - species
+      properties:
+        name:
+          type: string
+          description: The pet's display name.
+        species:
+          type: string
+          description: The pet's species, such as "dog" or "cat".
+        tags:
+          type: array
+          description: Optional tags used to categorize the pet.
+          items:
+            type: string
diff --git a/fern/docs.yml b/fern/docs.yml
index 8f1c5360e..15ce39bd9 100644
--- a/fern/docs.yml
+++ b/fern/docs.yml
@@ -541,6 +541,8 @@ redirects:
   # Docs self-hosted / alternatives
   - source: /learn/docs/enterprise/self-hosted
     destination: /learn/docs/self-hosted/overview
+  - source: /learn/docs/self-hosted/releases
+    destination: /learn/docs/self-hosted/changelog
   - source: /learn/docs/alternatives/mintlify
     destination: /learn/docs/getting-started/overview
 
diff --git a/fern/fern.config.json b/fern/fern.config.json
index 788fb6032..e2c2ac46f 100644
--- a/fern/fern.config.json
+++ b/fern/fern.config.json
@@ -1,4 +1,4 @@
 {
   "organization": "fern",
-  "version": "5.7.5"
+  "version": "5.21.1"
 }
diff --git a/fern/products/docs/docs.yml b/fern/products/docs/docs.yml
index 77e194548..58b70b61d 100644
--- a/fern/products/docs/docs.yml
+++ b/fern/products/docs/docs.yml
@@ -403,6 +403,7 @@ navigation:
         path: ./pages/self-hosted/health-check-endpoints.mdx
       - changelog: ./pages/self-hosted/changelog
         title: Releases
+        slug: changelog
   - section: Analytics & integrations
     slug: integrations
     collapsed: true
diff --git a/fern/products/docs/pages/self-hosted/self-hosted-set-up.mdx b/fern/products/docs/pages/self-hosted/self-hosted-set-up.mdx
index 8471f0996..16915b6a1 100644
--- a/fern/products/docs/pages/self-hosted/self-hosted-set-up.mdx
+++ b/fern/products/docs/pages/self-hosted/self-hosted-set-up.mdx
@@ -80,7 +80,7 @@ RUN fern-generate
 </Info>
 
 <Tip>
-See [recent releases](/learn/docs/self-hosted/releases) to pin to a specific version instead of `:latest`.
+See [recent releases](/learn/docs/self-hosted/changelog) to pin to a specific version instead of `:latest`.
 </Tip>
 
 </Step>
diff --git a/fern/products/docs/pages/self-hosted/self-hosted.mdx b/fern/products/docs/pages/self-hosted/self-hosted.mdx
index 6f7518955..4da66cf18 100644
--- a/fern/products/docs/pages/self-hosted/self-hosted.mdx
+++ b/fern/products/docs/pages/self-hosted/self-hosted.mdx
@@ -78,7 +78,7 @@ Fern provides your documentation site as a ready-to-run Docker container that yo
 1. **Upload your fern folder** - Add your documentation source files to the container
 1. **Run the container** - Start your local server using standard Docker commands
 1. **Deploy** - Set up your server environment and publish the documentation
-1. **Receive updated Docker images** - Fern [releases new versions of the Docker image](/learn/docs/self-hosted/releases) that your team can evaluate and deploy when ready. 
+1. **Receive updated Docker images** - Fern [releases new versions of the Docker image](/learn/docs/self-hosted/changelog) that your team can evaluate and deploy when ready. 
 
 ### Architecture diagram
 
diff --git a/fern/translations/zh/apis/petstore/openapi.yml b/fern/translations/zh/apis/petstore/openapi.yml
new file mode 100644
index 000000000..67b4c87e2
--- /dev/null
+++ b/fern/translations/zh/apis/petstore/openapi.yml
@@ -0,0 +1,124 @@
+openapi: 3.1.0
+info:
+  title: 宠物商店 API
+  version: 1.0.0
+  description: |
+    用于演示 Fern 本地化 OpenAPI 文档的小型示例 API。此规范的结构、路径和模式
+    与基础版本 `fern/apis/petstore/openapi.yml` 完全一致；仅 `summary` 和
+    `description` 字符串被翻译为简体中文。
+servers:
+  - url: https://petstore.example.com/api
+    description: 生产环境服务器
+tags:
+  - name: pets
+    description: 用于管理商店中宠物的操作。
+paths:
+  /pets:
+    get:
+      operationId: listPets
+      tags:
+        - pets
+      summary: 列出宠物
+      description: 返回商店中宠物的分页列表。
+      parameters:
+        - name: limit
+          in: query
+          description: 单页返回的最大宠物数量。
+          required: false
+          schema:
+            type: integer
+            format: int32
+            minimum: 1
+            maximum: 100
+            default: 20
+      responses:
+        "200":
+          description: 一页宠物数据。
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: "#/components/schemas/Pet"
+    post:
+      operationId: createPet
+      tags:
+        - pets
+      summary: 创建宠物
+      description: 向商店中添加一只新宠物。
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              $ref: "#/components/schemas/NewPet"
+      responses:
+        "201":
+          description: 宠物创建成功。
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pet"
+  /pets/{petId}:
+    get:
+      operationId: getPet
+      tags:
+        - pets
+      summary: 按 ID 获取宠物
+      description: 返回由唯一 ID 标识的单只宠物。
+      parameters:
+        - name: petId
+          in: path
+          description: 宠物的唯一标识符。
+          required: true
+          schema:
+            type: string
+      responses:
+        "200":
+          description: 请求的宠物。
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pet"
+        "404":
+          description: 未找到具有该 ID 的宠物。
+components:
+  schemas:
+    Pet:
+      type: object
+      required:
+        - id
+        - name
+        - species
+      properties:
+        id:
+          type: string
+          description: 宠物的唯一标识符。
+        name:
+          type: string
+          description: 宠物的显示名称。
+        species:
+          type: string
+          description: 宠物的物种，例如 "dog" 或 "cat"。
+        tags:
+          type: array
+          description: 用于对宠物进行分类的可选标签。
+          items:
+            type: string
+    NewPet:
+      type: object
+      required:
+        - name
+        - species
+      properties:
+        name:
+          type: string
+          description: 宠物的显示名称。
+        species:
+          type: string
+          description: 宠物的物种，例如 "dog" 或 "cat"。
+        tags:
+          type: array
+          description: 用于对宠物进行分类的可选标签。
+          items:
+            type: string