diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7cd1307..eb0fdcf 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
     timeout-minutes: 10
     name: lint
     runs-on: ${{ github.repository == 'stainless-sdks/perplexity-python' && 'depot-ubuntu-24.04' || 'ubuntu-latest' }}
-    if: github.event_name == 'push' || github.event.pull_request.head.repo.fork
+    if: (github.event_name == 'push' || github.event.pull_request.head.repo.fork) && (github.event_name != 'push' || github.event.head_commit.message != 'codegen metadata')
     steps:
       - uses: actions/checkout@v6
 
@@ -38,7 +38,7 @@ jobs:
         run: ./scripts/lint
 
   build:
-    if: github.event_name == 'push' || github.event.pull_request.head.repo.fork
+    if: (github.event_name == 'push' || github.event.pull_request.head.repo.fork) && (github.event_name != 'push' || github.event.head_commit.message != 'codegen metadata')
     timeout-minutes: 10
     name: build
     permissions:
diff --git a/.gitignore b/.gitignore
index 95ceb18..3824f4c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 .prism.log
+.stdy.log
 _dev
 
 __pycache__
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 1d3d204..f81bf99 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.30.4"
+  ".": "0.31.0"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7b3dc35..eaf5e28 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,19 @@
 # Changelog
 
+## 0.31.0 (2026-03-26)
+
+Full Changelog: [v0.30.4...v0.31.0](https://github.com/perplexityai/perplexity-py/compare/v0.30.4...v0.31.0)
+
+### Features
+
+* **internal:** implement indices array format for query and form serialization ([3639a28](https://github.com/perplexityai/perplexity-py/commit/3639a28cd332b7df2b194f35f12b84ce5bf7f1af))
+
+
+### Chores
+
+* **ci:** skip lint on metadata-only changes ([25a72f3](https://github.com/perplexityai/perplexity-py/commit/25a72f3f08edbf0600e62c07a122910cb05d1123))
+* **internal:** update gitignore ([8fb5309](https://github.com/perplexityai/perplexity-py/commit/8fb53095aeadd031d454b0db588ab4dc795a0a3a))
+
 ## 0.30.4 (2026-03-22)
 
 Full Changelog: [v0.30.3...v0.30.4](https://github.com/perplexityai/perplexity-py/compare/v0.30.3...v0.30.4)
diff --git a/pyproject.toml b/pyproject.toml
index 176c3c7..cabd46a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "perplexityai"
-version = "0.30.4"
+version = "0.31.0"
 description = "The official Python library for the perplexity API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/src/perplexity/_qs.py b/src/perplexity/_qs.py
index ada6fd3..de8c99b 100644
--- a/src/perplexity/_qs.py
+++ b/src/perplexity/_qs.py
@@ -101,7 +101,10 @@ def _stringify_item(
                     items.extend(self._stringify_item(key, item, opts))
                 return items
             elif array_format == "indices":
-                raise NotImplementedError("The array indices format is not supported yet")
+                items = []
+                for i, item in enumerate(value):
+                    items.extend(self._stringify_item(f"{key}[{i}]", item, opts))
+                return items
             elif array_format == "brackets":
                 items = []
                 key = key + "[]"
diff --git a/src/perplexity/_version.py b/src/perplexity/_version.py
index cd49110..4f40820 100644
--- a/src/perplexity/_version.py
+++ b/src/perplexity/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "perplexity"
-__version__ = "0.30.4"  # x-release-please-version
+__version__ = "0.31.0"  # x-release-please-version