diff --git a/pkgs/development/python-modules/langchain-core/update.sh b/pkgs/development/python-modules/langchain-core/update.sh
index 0d295d19d536..cae8ebaf4c79 100755
--- a/pkgs/development/python-modules/langchain-core/update.sh
+++ b/pkgs/development/python-modules/langchain-core/update.sh
@@ -10,6 +10,7 @@ declare -ar packages=(
     langchain-chroma
     langchain-community
     langchain-core
+    langchain-deepseek
     langchain-fireworks
     langchain-groq
     langchain-huggingface
diff --git a/pkgs/development/python-modules/langchain-deepseek/default.nix b/pkgs/development/python-modules/langchain-deepseek/default.nix
new file mode 100644
index 000000000000..50b5b2ad6401
--- /dev/null
+++ b/pkgs/development/python-modules/langchain-deepseek/default.nix
@@ -0,0 +1,78 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+
+  # build-system
+  pdm-backend,
+  poetry-core,
+
+  # dependencies
+  langchain-core,
+  langchain-openai,
+
+  # testing
+  langchain-tests,
+  pytestCheckHook,
+  pytest-asyncio,
+  syrupy,
+
+  # passthru
+  nix-update-script,
+}:
+
+buildPythonPackage rec {
+  pname = "langchain-deepseek";
+  version = "0.1.3";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "langchain-ai";
+    repo = "langchain";
+    tag = "langchain-deepseek==${version}";
+    hash = "sha256-nkL8QO1H29sA6g61Hgt7QrRAfwD3t+0m5JEHyPx8B7Y=";
+  };
+
+  sourceRoot = "${src.name}/libs/partners/deepseek";
+
+  build-system = [
+    pdm-backend
+  ];
+
+  pythonRelaxDeps = [
+    # Each component release requests the exact latest core.
+    # That prevents us from updating individual components.
+    "langchain-core"
+  ];
+
+  dependencies = [
+    langchain-core
+    langchain-openai
+  ];
+
+  nativeCheckInputs = [
+    langchain-tests
+    pytestCheckHook
+    pytest-asyncio
+    syrupy
+  ];
+
+  pytestFlagsArray = [ "tests/unit_tests" ];
+
+  pythonImportsCheck = [ "langchain_deepseek" ];
+
+  passthru.updateScript = nix-update-script {
+    extraArgs = [
+      "--version-regex"
+      "langchain-deepseek==([0-9.]+)"
+    ];
+  };
+
+  meta = {
+    changelog = "https://github.com/langchain-ai/langchain/releases/tag/langchain-deepseek==${version}";
+    description = "Integration package connecting DeepSeek and LangChain";
+    homepage = "https://github.com/langchain-ai/langchain/tree/master/libs/partners/deepseek";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ sarahec ];
+  };
+}
diff --git a/pkgs/development/python-modules/langchain/default.nix b/pkgs/development/python-modules/langchain/default.nix
index cb67f1450edd..35390e75df76 100644
--- a/pkgs/development/python-modules/langchain/default.nix
+++ b/pkgs/development/python-modules/langchain/default.nix
@@ -42,14 +42,14 @@
 
 buildPythonPackage rec {
   pname = "langchain";
-  version = "0.3.24";
+  version = "0.3.25";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "langchain-ai";
     repo = "langchain";
     tag = "langchain==${version}";
-    hash = "sha256-Up/pH2TxLPiPO49oIa2ZlNeH3TyN9sZSlNsqOIRmlxc=";
+    hash = "sha256-AzH1rZFqEH8sovZZfJykvsEmCedEZWigQFHWHl6/PdE=";
   };
 
   sourceRoot = "${src.name}/libs/langchain";
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index cbe1e52e24ae..0d38e5be3349 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -7540,6 +7540,8 @@ self: super: with self; {
 
   langchain-core = callPackage ../development/python-modules/langchain-core { };
 
+  langchain-deepseek = callPackage ../development/python-modules/langchain-deepseek { };
+
   langchain-fireworks = callPackage ../development/python-modules/langchain-fireworks { };
 
   langchain-groq = callPackage ../development/python-modules/langchain-groq { };