diff --git a/server/mcp_server_askecho/pyproject.toml b/server/mcp_server_askecho/pyproject.toml
index e94721f5..00842642 100644
--- a/server/mcp_server_askecho/pyproject.toml
+++ b/server/mcp_server_askecho/pyproject.toml
@@ -8,7 +8,10 @@ authors = [
 ]
 requires-python = ">=3.12"
 dependencies = [
-    "mcp>=1.9.4",
+    "mcp==1.12.4",
+    "pydantic==2.11.7",
+    "pydantic-core==2.33.2",
+    "pydantic-settings==2.10.1",
     "aiohttp>=3.9.0",
 ]