diff --git a/packages/jupyter-ai-magics/pyproject.toml b/packages/jupyter-ai-magics/pyproject.toml
index 05e11a10d..3a0dc43fe 100644
--- a/packages/jupyter-ai-magics/pyproject.toml
+++ b/packages/jupyter-ai-magics/pyproject.toml
@@ -24,6 +24,7 @@ dependencies = [
     "ipython",
     "importlib_metadata>=5.2.0",
     "langchain==0.0.350",
+    "langchain-core>=0.1.0,<0.1.4",
     "typing_extensions>=4.5.0",
     "click~=8.0",
     "jsonpath-ng>=1.5.3,<2",
diff --git a/packages/jupyter-ai/pyproject.toml b/packages/jupyter-ai/pyproject.toml
index 9bea0f15f..87e54c9ae 100644
--- a/packages/jupyter-ai/pyproject.toml
+++ b/packages/jupyter-ai/pyproject.toml
@@ -28,6 +28,7 @@ dependencies = [
     "aiosqlite>=0.18",
     "importlib_metadata>=5.2.0",
     "langchain==0.0.350",
+    "langchain-core>=0.1.0,<0.1.4",
     "tiktoken",                  # required for OpenAIEmbeddings
     "jupyter_ai_magics",
     "dask[distributed]",
diff --git a/pyproject.toml b/pyproject.toml
index 0eea5610a..b2b127fee 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,3 +38,6 @@ name = "Forbidden import of `pydantic` package. Please import from `langchain.py
 type = "forbidden"
 source_modules = ["jupyter_ai", "jupyter_ai_magics"]
 forbidden_modules = ["pydantic"]
+
+[tool.pytest.ini_options]
+addopts = "--ignore packages/jupyter-ai-module-cookiecutter"