diff --git a/pkgs/development/python-modules/langchain-chroma/default.nix b/pkgs/development/python-modules/langchain-chroma/default.nix
index bbb07eb7e686..b6fc144cc255 100644
--- a/pkgs/development/python-modules/langchain-chroma/default.nix
+++ b/pkgs/development/python-modules/langchain-chroma/default.nix
@@ -14,14 +14,14 @@
 
 buildPythonPackage rec {
   pname = "langchain-chroma";
-  version = "0.2.2";
+  version = "0.2.3";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "langchain-ai";
     repo = "langchain";
     tag = "langchain-chroma==${version}";
-    hash = "sha256-GFDaUA0E25YDHYLwrpsAuOiBWFvHByl61XhwK5NmJbg=";
+    hash = "sha256-6WOViBKXZ844g2M6pYohHsXnzJiWbTNgj9EjN+z+B+4=";
   };
 
   sourceRoot = "${src.name}/libs/partners/chroma";
@@ -59,7 +59,7 @@ buildPythonPackage rec {
   passthru.updateScript = nix-update-script {
     extraArgs = [
       "--version-regex"
-      "^langchain-chroma==([0-9.]+)$"
+      "langchain-chroma==([0-9.]+)"
     ];
   };
 
diff --git a/pkgs/development/python-modules/langchain-core/default.nix b/pkgs/development/python-modules/langchain-core/default.nix
index 9226ed18530e..2ae93d91c052 100644
--- a/pkgs/development/python-modules/langchain-core/default.nix
+++ b/pkgs/development/python-modules/langchain-core/default.nix
@@ -29,18 +29,21 @@
   pytest-xdist,
   pytestCheckHook,
   syrupy,
+
+  # passthru
+  nix-update-script,
 }:
 
 buildPythonPackage rec {
   pname = "langchain-core";
-  version = "0.3.56";
+  version = "0.3.59";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "langchain-ai";
     repo = "langchain";
     tag = "langchain-core==${version}";
-    hash = "sha256-gsjYr22Phb71oKN4iVGsi6r1iETDhFHCKKOiwp0SuLU=";
+    hash = "sha256-qfNt6rH2nHIFfzqZCTsIhWfXntRXvSKnzfQrNS3LWcs=";
   };
 
   sourceRoot = "${src.name}/libs/core";
@@ -85,9 +88,11 @@ buildPythonPackage rec {
       doCheck = true;
     });
 
-    updateScript = {
-      command = [ ./update.sh ];
-      supportedFeatures = [ "commit" ];
+    updateScript = nix-update-script {
+      extraArgs = [
+        "--version-regex"
+        "langchain-core==([0-9.]+)"
+      ];
     };
   };
 
diff --git a/pkgs/development/python-modules/langchain-huggingface/default.nix b/pkgs/development/python-modules/langchain-huggingface/default.nix
index 2cf86baccf0f..d9ef22aee8fb 100644
--- a/pkgs/development/python-modules/langchain-huggingface/default.nix
+++ b/pkgs/development/python-modules/langchain-huggingface/default.nix
@@ -2,10 +2,9 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
-  nix-update-script,
 
   # build-system
-  poetry-core,
+  pdm-backend,
 
   # dependencies
   huggingface-hub,
@@ -27,23 +26,26 @@
   responses,
   syrupy,
   toml,
+
+  # passthru
+  nix-update-script,
 }:
 
 buildPythonPackage rec {
   pname = "langchain-huggingface";
-  version = "0.1.2";
+  version = "0.2.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "langchain-ai";
     repo = "langchain";
     tag = "langchain-huggingface==${version}";
-    hash = "sha256-ACR+JzKcnYXROGOQe6DlZeqcYd40KlesgXSUOybOT20=";
+    hash = "sha256-TqxssbqqjJV+/ynM2wo3C1aCV6wy0DsvdEuiTvVqNa8=";
   };
 
   sourceRoot = "${src.name}/libs/partners/huggingface";
 
-  build-system = [ poetry-core ];
+  build-system = [ pdm-backend ];
 
   pythonRelaxDeps = [
     # Each component release requests the exact latest core.
@@ -81,7 +83,7 @@ buildPythonPackage rec {
   passthru.updateScript = nix-update-script {
     extraArgs = [
       "--version-regex"
-      "^langchain-huggingface==([0-9.]+)$"
+      "langchain-huggingface==([0-9.]+)"
     ];
   };
 
diff --git a/pkgs/development/python-modules/langchain-ollama/default.nix b/pkgs/development/python-modules/langchain-ollama/default.nix
index cc88f4308649..954c1b3fb711 100644
--- a/pkgs/development/python-modules/langchain-ollama/default.nix
+++ b/pkgs/development/python-modules/langchain-ollama/default.nix
@@ -5,7 +5,6 @@
 
   # build-system
   pdm-backend,
-  poetry-core,
 
   # dependencies
   langchain-core,
@@ -17,26 +16,26 @@
   pytest-asyncio,
   syrupy,
 
+  # passthru
   nix-update-script,
 }:
 
 buildPythonPackage rec {
   pname = "langchain-ollama";
-  version = "0.3.1";
+  version = "0.3.2";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "langchain-ai";
     repo = "langchain";
     tag = "langchain-ollama==${version}";
-    hash = "sha256-nKLz9eCGaonECmr3Uby3j4ul5jQZaqUH3PD20z/JKek=";
+    hash = "sha256-GRaWwUR26yZqjtO5f5p8abj/4KSrQE2uGAECGjeDxPY=";
   };
 
   sourceRoot = "${src.name}/libs/partners/ollama";
 
   build-system = [
     pdm-backend
-    poetry-core
   ];
 
   pythonRelaxDeps = [
@@ -64,7 +63,7 @@ buildPythonPackage rec {
   passthru.updateScript = nix-update-script {
     extraArgs = [
       "--version-regex"
-      "langchain-ollama==(.*)"
+      "langchain-ollama==([0-9.]+)"
     ];
   };
 
diff --git a/pkgs/development/python-modules/langchain-openai/default.nix b/pkgs/development/python-modules/langchain-openai/default.nix
index 7bf2ebebd1cb..532d7079bed1 100644
--- a/pkgs/development/python-modules/langchain-openai/default.nix
+++ b/pkgs/development/python-modules/langchain-openai/default.nix
@@ -2,7 +2,6 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
-  nix-update-script,
 
   # build-system
   pdm-backend,
@@ -25,18 +24,21 @@
   responses,
   syrupy,
   toml,
+
+  # passthru
+  nix-update-script,
 }:
 
 buildPythonPackage rec {
   pname = "langchain-openai";
-  version = "0.3.12";
+  version = "0.3.16";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "langchain-ai";
     repo = "langchain";
     tag = "langchain-openai==${version}";
-    hash = "sha256-pIXdXGrYOoE8sF+cKpX82QfTaYna8kbzUv0n+yR7uHE=";
+    hash = "sha256-e8y5rL+OUFOAPfXTC+XHn/wVfsecPInsS8hBxm1USAw=";
   };
 
   sourceRoot = "${src.name}/libs/partners/openai";
@@ -88,6 +90,7 @@ buildPythonPackage rec {
     "test_azure_openai_uses_actual_secret_value_from_secretstr"
     "test_azure_serialized_secrets"
     "test_chat_openai_get_num_tokens"
+    "test_embed_documents_with_custom_chunk_size"
     "test_get_num_tokens_from_messages"
     "test_get_token_ids"
     "test_init_o1"
@@ -99,7 +102,7 @@ buildPythonPackage rec {
   passthru.updateScript = nix-update-script {
     extraArgs = [
       "--version-regex"
-      "^langchain-openai==([0-9.]+)$"
+      "langchain-openai==([0-9.]+)"
     ];
   };
 
diff --git a/pkgs/development/python-modules/langchain-tests/default.nix b/pkgs/development/python-modules/langchain-tests/default.nix
index 77ef7dcac9f3..51b591b4e83b 100644
--- a/pkgs/development/python-modules/langchain-tests/default.nix
+++ b/pkgs/development/python-modules/langchain-tests/default.nix
@@ -19,18 +19,21 @@
   pytest-asyncio,
   pytest-socket,
   pytestCheckHook,
+
+  # passthru
+  nix-update-script,
 }:
 
 buildPythonPackage rec {
   pname = "langchain-tests";
-  version = "0.3.17";
+  version = "0.3.19";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "langchain-ai";
     repo = "langchain";
     tag = "langchain-tests==${version}";
-    hash = "sha256-jhdCpZsRvCxDIfaZpdqAdx+rxJTU6QHDgNKc4w7XmR8=";
+    hash = "sha256-DSTngWRFseJ6kSAY7Lxxkh77QFr0jhHxG3mH89QmdxA=";
   };
 
   sourceRoot = "${src.name}/libs/standard-tests";
@@ -61,8 +64,11 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  passthru = {
-    inherit (langchain-core) updateScript;
+  passthru.updateScript = nix-update-script {
+    extraArgs = [
+      "--version-regex"
+      "langchain-tests==([0-9.]+)"
+    ];
   };
 
   meta = {
diff --git a/pkgs/development/python-modules/langchain-text-splitters/default.nix b/pkgs/development/python-modules/langchain-text-splitters/default.nix
index e15c3e6e30a1..78936ef99755 100644
--- a/pkgs/development/python-modules/langchain-text-splitters/default.nix
+++ b/pkgs/development/python-modules/langchain-text-splitters/default.nix
@@ -18,14 +18,14 @@
 
 buildPythonPackage rec {
   pname = "langchain-text-splitters";
-  version = "0.3.7";
+  version = "0.3.8";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "langchain-ai";
     repo = "langchain";
     tag = "langchain-text-splitters==${version}";
-    hash = "sha256-tIX1nxmXU3xhJuM2Q3Tm4fbCoJwI0A8+G1aSyLcoNo0=";
+    hash = "sha256-Ia3ZZ94uLZUVr1/w4HLPZLM6u8leA4OJtAwUf7eSAE0=";
   };
 
   sourceRoot = "${src.name}/libs/text-splitters";
diff --git a/pkgs/development/python-modules/langchain/default.nix b/pkgs/development/python-modules/langchain/default.nix
index cb67f1450edd..29138323fb55 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-B2Kg8kC6Qlu89hZVMhgqPU32BwFvgAti0IIYUdosT1A=";
   };
 
   sourceRoot = "${src.name}/libs/langchain";