diff --git a/CHANGELOG.md b/CHANGELOG.md
index b4302fe..bc86509 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 # CHANGELOG
 
 ## NEXT
+* Update dependencies
 * Replace deprecated `actions/create-release@v1` with `softprops/action-gh-release@v2` in the release workflow to avoid legacy Node runtime usage.
 * Update example notebooks to use `BuilderContext.create(...)` and `agent_factory` instead of deprecated `BaseAgentFactory`.
 * Add `ARCHITECTURE.md` for assistant_core internals.
diff --git a/pyproject.toml b/pyproject.toml
index f45a860..a8db39c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,13 +9,13 @@ readme = "README.md"
 [tool.poetry.dependencies]
 python = "^3.12"
 langchain = ">=1.0,<2.0"
-langchain-openai = "^0.3.3"
+langchain-openai = "^1.1.16"
 langgraph = ">=1.0,<2.0"
 python-dotenv = "^1.0.1"
 langchain-tavily = "^0.2.11"
 
 [tool.poetry.group.dev.dependencies]
-pytest = "^7.3.1"
+pytest = "^9.0.3"
 black = {extras = ["jupyter"], version = "^25.1.0"}
 flake8 = "^7.3.0"
 isort = "^6.0.1"