diff --git a/packages/data-designer-engine/pyproject.toml b/packages/data-designer-engine/pyproject.toml
index ec7dd5be..6b5470b1 100644
--- a/packages/data-designer-engine/pyproject.toml
+++ b/packages/data-designer-engine/pyproject.toml
@@ -43,7 +43,7 @@ dependencies = [
     "json-repair>=0.48.0,<1",
     "jsonpath-rust-bindings>=1.0,<2",
     "jsonschema>=4.0.0,<5",
-    "litellm>=1.73.6,<1.80.12",
+    "litellm>=1.77.0,<1.80.12",
     "lxml>=6.0.2,<7",
     "marko>=2.1.2,<3",
     "mcp>=1.26.0,<2",
diff --git a/uv.lock b/uv.lock
index c114f795..1740a98a 100644
--- a/uv.lock
+++ b/uv.lock
@@ -881,7 +881,7 @@ requires-dist = [
     { name = "json-repair", specifier = ">=0.48.0,<1" },
     { name = "jsonpath-rust-bindings", specifier = ">=1.0,<2" },
     { name = "jsonschema", specifier = ">=4.0.0,<5" },
-    { name = "litellm", specifier = ">=1.73.6,<1.80.12" },
+    { name = "litellm", specifier = ">=1.77.0,<1.80.12" },
     { name = "lxml", specifier = ">=6.0.2,<7" },
     { name = "marko", specifier = ">=2.1.2,<3" },
     { name = "mcp", specifier = ">=1.26.0,<2" },