diff --git a/pyproject.toml b/pyproject.toml
index 919eff5..9eaf7a8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,10 +1,10 @@
 [project]
 name = "pallas-mcp"
-version = "0.5.0"
+version = "0.5.1"
 description = "FastAgent MCP Bridge — generic runtime for serving FastAgent agents over StreamableHTTP"
 requires-python = ">=3.13.5"
 dependencies = [
-    "fast-agent-mcp>=0.7.15",
+    "fast-agent-mcp==0.7.15",
     "httpx",
     "prometheus-client",
     "pyyaml",