diff --git a/pyproject.toml b/pyproject.toml
index a558ca4c4d..e9acd88ff4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -55,7 +55,7 @@ dependencies = [
     "isodate>=0.7.2,<0.8",
     "jedi>=0.19.0,<0.20",
     "langchain>=0.3.11,<0.4",
-    "langchain-experimental>=0.3.4,<0.4",
+    "langchain-experimental>=0.4.2,<0.5",
     "langchain-openai>=0.3.2,<0.4",
     "litellm==1.84.0",
     "llama-index>=0.14.0,<0.15",