diff --git a/pkgs/development/python-modules/langchain-core/default.nix b/pkgs/development/python-modules/langchain-core/default.nix
index 0ad445301cc6..e7c3361e7158 100644
--- a/pkgs/development/python-modules/langchain-core/default.nix
+++ b/pkgs/development/python-modules/langchain-core/default.nix
@@ -17,7 +17,7 @@
 
 buildPythonPackage rec {
   pname = "langchain-core";
-  version = "0.1.41";
+  version = "0.1.42";
   pyproject = true;
 
   disabled = pythonOlder "3.8";
@@ -25,7 +25,7 @@ buildPythonPackage rec {
   src = fetchPypi {
     pname = "langchain_core";
     inherit version;
-    hash = "sha256-QAIwSIOyUa+Mt4HwHFn1au7li+Qsll273soKO/uPlq8=";
+    hash = "sha256-QHUb9g6l2OKy7+ZSkNtDRxfuODSHDAAuQOKBHwnYFOY=";
   };
 
   pythonRelaxDeps = [
diff --git a/pkgs/development/python-modules/langchain/default.nix b/pkgs/development/python-modules/langchain/default.nix
index cd629d56f3da..48c2c0db93a1 100644
--- a/pkgs/development/python-modules/langchain/default.nix
+++ b/pkgs/development/python-modules/langchain/default.nix
@@ -51,7 +51,7 @@
 
 buildPythonPackage rec {
   pname = "langchain";
-  version = "0.1.15";
+  version = "0.1.16";
   pyproject = true;
 
   disabled = pythonOlder "3.8";
@@ -60,7 +60,7 @@ buildPythonPackage rec {
     owner = "langchain-ai";
     repo = "langchain";
     rev = "refs/tags/v${version}";
-    hash = "sha256-SjuIt3pyFOqBlWObs/sHeWvwKs1wkZsowKd74HXLiAo=";
+    hash = "sha256-Xv8juma/1qGC2Rb659dJBvRzRh5W+zU+O8W6peElFGc=";
   };
 
   sourceRoot = "${src.name}/libs/langchain";