diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index ac9a2e7521..55d20255c9 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -6,4 +6,4 @@ USER vscode
 RUN curl -sSf https://rye.astral.sh/get | RYE_VERSION="0.35.0" RYE_INSTALL_OPTION="--yes" bash
 ENV PATH=/home/vscode/.rye/shims:$PATH
 
-RUN echo "[[ -d .venv ]] && source .venv/bin/activate" >> /home/vscode/.bashrc
+RUN echo "[[ -d .venv ]] && source .venv/bin/activate || export PATH=\$PATH" >> /home/vscode/.bashrc
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index bbeb30b148..c17fdc169f 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -24,6 +24,9 @@
         }
       }
     }
+  },
+  "features": {
+    "ghcr.io/devcontainers/features/node:1": {}
   }
 
   // Features to add to the dev container. More info: https://containers.dev/features.
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index a9866d99a2..7ef7bb772e 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.63.2"
+  ".": "1.64.0"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7ed87c5875..1aa32a14bd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,23 @@
 # Changelog
 
+## 1.64.0 (2025-02-22)
+
+Full Changelog: [v1.63.2...v1.64.0](https://github.com/openai/openai-python/compare/v1.63.2...v1.64.0)
+
+### Features
+
+* **client:** allow passing `NotGiven` for body ([#2135](https://github.com/openai/openai-python/issues/2135)) ([4451f56](https://github.com/openai/openai-python/commit/4451f5677f9eaad9b8fee74f71c2e5fe6785c420))
+
+
+### Bug Fixes
+
+* **client:** mark some request bodies as optional ([4451f56](https://github.com/openai/openai-python/commit/4451f5677f9eaad9b8fee74f71c2e5fe6785c420))
+
+
+### Chores
+
+* **internal:** fix devcontainers setup ([#2137](https://github.com/openai/openai-python/issues/2137)) ([4d88402](https://github.com/openai/openai-python/commit/4d884020cbeb1ca6093dd5317e3e5812551f7a46))
+
 ## 1.63.2 (2025-02-17)
 
 Full Changelog: [v1.63.1...v1.63.2](https://github.com/openai/openai-python/compare/v1.63.1...v1.63.2)
diff --git a/pyproject.toml b/pyproject.toml
index 453b3cea33..7cd583da3f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "openai"
-version = "1.63.2"
+version = "1.64.0"
 description = "The official Python library for the openai API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/src/openai/_base_client.py b/src/openai/_base_client.py
index 8a408d8e58..94a5edd010 100644
--- a/src/openai/_base_client.py
+++ b/src/openai/_base_client.py
@@ -520,7 +520,7 @@ def _build_request(
             # so that passing a `TypedDict` doesn't cause an error.
             # https://github.com/microsoft/pyright/issues/3526#event-6715453066
             params=self.qs.stringify(cast(Mapping[str, Any], params)) if params else None,
-            json=json_data,
+            json=json_data if is_given(json_data) else None,
             files=files,
             **kwargs,
         )
diff --git a/src/openai/_version.py b/src/openai/_version.py
index 1f57a6db7e..0a898ceeb8 100644
--- a/src/openai/_version.py
+++ b/src/openai/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "openai"
-__version__ = "1.63.2"  # x-release-please-version
+__version__ = "1.64.0"  # x-release-please-version