diff --git a/.github/workflows/test-spec.yml b/.github/workflows/test-spec.yml
index 6395778a..05e24557 100644
--- a/.github/workflows/test-spec.yml
+++ b/.github/workflows/test-spec.yml
@@ -26,7 +26,7 @@ jobs:
           - {version: 1.3.17, admin_password: admin}
           - {version: 2.0.0, admin_password: admin}
           - {version: 2.15.0}
-          - {version: 2.16.0, hub: opensearchstaging, ref: '@sha256:aa99ce3e2c9c94cd934cf98bab753a9920bfdbbb74bdc932d1b443d31c18d6b2'}
+          - {version: 2.16.0, hub: opensearchstaging, ref: '@sha256:50fbfe3b95c41e92a113ada3e80513ba4524dfc8a25dc6aaeff2bbe1e1145d5f'}
 
     name: test-opensearch-spec (version=${{ matrix.entry.version }}, hub=${{ matrix.entry.hub || 'opensearchproject' }})
     runs-on: ubuntu-latest
@@ -111,4 +111,4 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: pr-comment
-          path: pr-comment.json
\ No newline at end of file
+          path: pr-comment.json
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7887cdd7..aa24870b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -40,6 +40,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Added `concurrent_query_*` and `search_idle_reactivate_count_total` fields to `SearchStats` ([#395](https://github.com/opensearch-project/opensearch-api-specification/pull/395))
 - Added `remote_store` to `TranslogStats` ([#395](https://github.com/opensearch-project/opensearch-api-specification/pull/395))
 - Added `file` to `/_cache/clear` and `/{index}/_cache/clear` ([#396](https://github.com/opensearch-project/opensearch-api-specification/pull/396))
+- Add `strict_allow_templates` option for the dynamic mapping parameter ([#408](https://github.com/opensearch-project/opensearch-api-specification/pull/408))
 - Added a workflow to run tests against the next version of OpenSearch ([#409](https://github.com/opensearch-project/opensearch-api-specification/pull/409))
 - Added support for skipping tests using semver range ([#410](https://github.com/opensearch-project/opensearch-api-specification/pull/410))
 - Added `cluster_manager_timeout` to `HEAD /{index}` ([#421](https://github.com/opensearch-project/opensearch-api-specification/pull/421))
diff --git a/spec/schemas/_common.mapping.yaml b/spec/schemas/_common.mapping.yaml
index 18ef5472..cc8e8de0 100644
--- a/spec/schemas/_common.mapping.yaml
+++ b/spec/schemas/_common.mapping.yaml
@@ -136,8 +136,8 @@ components:
       type: string
       enum:
         - 'false'
-        - runtime
         - strict
+        - strict_allow_templates
         - 'true'
     DynamicTemplate:
       type: object
diff --git a/tests/indices/mapping.yml b/tests/indices/mapping.yml
index 4d4860f0..af2b2951 100644
--- a/tests/indices/mapping.yml
+++ b/tests/indices/mapping.yml
@@ -70,6 +70,7 @@ chapters:
       write_index_only: true
     request_body:
       payload:
+        dynamic: 'true'
         properties:
           producer:
             type: text
@@ -92,4 +93,56 @@ chapters:
     response:
       status: 200
       payload:
-        acknowledged: true
\ No newline at end of file
+        acknowledged: true
+  - synopsis: Update mapping for an index with setting dynamic to false.
+    path: /{index}/_mapping
+    method: PUT
+    parameters:
+      index: movies
+      allow_no_indices: true
+      expand_wildcards: none
+      ignore_unavailable: true
+      timeout: 10s
+      write_index_only: true
+    request_body:
+      payload:
+        dynamic: 'false'
+    response:
+      status: 200
+      payload:
+        acknowledged: true
+  - synopsis: Update mapping for an index with setting dynamic to strict.
+    path: /{index}/_mapping
+    method: PUT
+    parameters:
+      index: movies
+      allow_no_indices: true
+      expand_wildcards: none
+      ignore_unavailable: true
+      timeout: 10s
+      write_index_only: true
+    request_body:
+      payload:
+        dynamic: strict
+    response:
+      status: 200
+      payload:
+        acknowledged: true
+  - synopsis: Update mapping for an index with setting dynamic to strict_allow_templates.
+    version: '>= 2.16'
+    path: /{index}/_mapping
+    method: PUT
+    parameters:
+      index: movies
+      allow_no_indices: true
+      expand_wildcards: none
+      ignore_unavailable: true
+      timeout: 10s
+      write_index_only: true
+    request_body:
+      payload:
+        dynamic: strict_allow_templates
+    response:
+      status: 200
+      payload:
+        acknowledged: true