diff --git a/pyproject.toml b/pyproject.toml
index 2248de9c3..384e040d0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,7 @@ requires-python = ">=3.12"
 dependencies = [
     "couchdb3>=2.0.2",
     "fastmcp>=3.2.0",
-    "mcp[cli]>=1.26.0",
+    "mcp[cli]>=1.26.0,<2",
     "pendulum>=3.2.0",
     "pydantic>=2.12.5",
     "requests>=2.32.5",
diff --git a/uv.lock b/uv.lock
index 599aa076b..892a5a5b9 100644
--- a/uv.lock
+++ b/uv.lock
@@ -329,7 +329,7 @@ requires-dist = [
     { name = "langchain-mcp-adapters", specifier = ">=0.2.2" },
     { name = "langchain-openai", specifier = ">=1.1.0" },
     { name = "litellm", specifier = "==1.94.0" },
-    { name = "mcp", extras = ["cli"], specifier = ">=1.26.0" },
+    { name = "mcp", extras = ["cli"], specifier = ">=1.26.0,<2" },
     { name = "numpy", specifier = ">=1.24" },
     { name = "openai", specifier = ">=1.40.0" },
     { name = "openai-agents", specifier = ">=0.0.7" },