diff --git a/packages/meeseeks_core/pyproject.toml b/packages/meeseeks_core/pyproject.toml
index 51dee9dd..14d80e53 100644
--- a/packages/meeseeks_core/pyproject.toml
+++ b/packages/meeseeks_core/pyproject.toml
@@ -15,7 +15,7 @@ dependencies = [
   "langchain-core>=1.2.8,<2.0.0",
   "langchain-community>=0.4.1,<0.5.0",
   "langchain-litellm>=0.4.0,<0.6.0",
-  "langfuse>=3.8.0,<4.0.0",
+  "langfuse>=3.8.0,<5.0.0",
   "litellm>=1.81.0,<2.0.0",
   "loguru>=0.7.2,<1.0.0",
   "pydantic>=2.7.0,<3.0.0",