diff --git a/pkgs/development/python-modules/langfuse/default.nix b/pkgs/development/python-modules/langfuse/default.nix
index 13040be3fbb6..9527031f45cb 100644
--- a/pkgs/development/python-modules/langfuse/default.nix
+++ b/pkgs/development/python-modules/langfuse/default.nix
@@ -2,6 +2,7 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+  pythonAtLeast,
   anyio,
   backoff,
   httpx,
@@ -19,18 +20,21 @@
   wrapt,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "langfuse";
-  version = "3.11.0";
+  version = "3.11.2";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "langfuse";
     repo = "langfuse-python";
-    tag = "v${version}";
-    hash = "sha256-3hL29Gu1lonkWAOyTqH2q03joXwVQimbVF0R2nYZUIs=";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-CZa1nzgGHQSx/cPkOxbDsfkWpgr/veWRN8zgHeYrJOw=";
   };
 
+  # https://github.com/langfuse/langfuse/issues/9618
+  disabled = pythonAtLeast "3.14";
+
   build-system = [ poetry-core ];
 
   pythonRelaxDeps = [ "packaging" ];
@@ -63,8 +67,8 @@ buildPythonPackage rec {
   meta = {
     description = "Instrument your LLM app with decorators or low-level SDK and get detailed tracing/observability";
     homepage = "https://github.com/langfuse/langfuse-python";
-    changelog = "https://github.com/langfuse/langfuse-python/releases/tag/${src.tag}";
+    changelog = "https://github.com/langfuse/langfuse-python/releases/tag/${finalAttrs.src.tag}";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ natsukium ];
   };
-}
+})