diff --git a/mcp-instructions-server/pyproject.toml b/mcp-instructions-server/pyproject.toml
index 78511bc..f2b1043 100644
--- a/mcp-instructions-server/pyproject.toml
+++ b/mcp-instructions-server/pyproject.toml
@@ -10,7 +10,7 @@ readme = "README.md"
 requires-python = ">=3.10"
 dependencies = [
     "mcp>=1.2.0",
-    "pyyaml>=6.0",
+    "pyyaml>=6.0.3",
 ]
 
 [project.optional-dependencies]