diff --git a/pyproject.toml b/pyproject.toml
index 66500752..c49d2faa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,6 +33,7 @@ dependencies = [
     "typing-extensions>=4.14.0",
     "yfinance>=0.2.63",
     "pytest>=8.4.1",
+    "langchain-deepseek>=0.1.3",
 ]
 
 [project.optional-dependencies]
diff --git a/requirements.txt b/requirements.txt
index d8de9fe8..f1d7e173 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,4 +24,5 @@ rich
 questionary
 langchain_anthropic
 langchain-google-genai
+langchain-deepseek
 python-dotenv
diff --git a/uv.lock b/uv.lock
index e106c002..7839dc96 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1833,6 +1833,19 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/54/f0/31db18b7b8213266aed926ce89b5bdd84ccde7ee2edf4cab14e3dd2bfcf1/langchain_core-0.3.65-py3-none-any.whl", hash = "sha256:80e8faf6e9f331f8ef728f3fe793549f1d3fb244fcf9e1bdcecab6a6f4669394", size = 438052, upload-time = "2025-06-10T20:08:27.393Z" },
 ]
 
+[[package]]
+name = "langchain-deepseek"
+version = "0.1.3"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "langchain-core" },
+    { name = "langchain-openai" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/ed/7f/be5bcf99b3814214a02ac205bda66d49d55a7d5440d47223105cef5df063/langchain_deepseek-0.1.3.tar.gz", hash = "sha256:89dd6aa120fb50dcfcd3d593626d34c1c40deefe4510710d0807fcc19481adf5", size = 7860, upload-time = "2025-03-21T17:11:58.356Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/00/7d/51b60aa91fa77742fc461704e5a8497e856156ae878102e6942799a78915/langchain_deepseek-0.1.3-py3-none-any.whl", hash = "sha256:8588e826371b417fca65c02f4273b4061eb9815a7bfcd5eb05acaa40d603aa89", size = 7123, upload-time = "2025-03-21T17:11:57.481Z" },
+]
+
 [[package]]
 name = "langchain-experimental"
 version = "0.3.4"
@@ -4832,6 +4845,7 @@ dependencies = [
     { name = "feedparser" },
     { name = "finnhub-python" },
     { name = "langchain-anthropic" },
+    { name = "langchain-deepseek" },
     { name = "langchain-experimental" },
     { name = "langchain-google-genai" },
     { name = "langchain-openai" },
@@ -4871,6 +4885,7 @@ requires-dist = [
     { name = "feedparser", specifier = ">=6.0.11" },
     { name = "finnhub-python", specifier = ">=2.4.23" },
     { name = "langchain-anthropic", specifier = ">=0.3.15" },
+    { name = "langchain-deepseek", specifier = ">=0.1.3" },
     { name = "langchain-experimental", specifier = ">=0.3.4" },
     { name = "langchain-google-genai", specifier = ">=2.1.5" },
     { name = "langchain-openai", specifier = ">=0.3.23" },