diff --git a/pyproject.toml b/pyproject.toml
index ab74fc7..1ce942f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,7 @@ dependencies = [
   "python-multipart>=0.0.9",
   "jmespath>=1.1.0",
   "cdisc-library-client>=0.1.6",
-  "mcp>=1.0.0",
+  "mcp>=1.0.0,<2.0",
   "python-docx>=1.1.0"
 ]
 
@@ -31,7 +31,7 @@ dependencies = [
 dev = [
   "pytest>=7.0.0",
   "pytest-cov>=4.0.0",
-  "ruff>=0.5.0",
+  "ruff>=0.5.0,<0.16",
   "black>=24.0.0",
   "detect-secrets>=1.4.0",
   "httpx>=0.27.0"