diff --git a/pyproject.toml b/pyproject.toml
index f4b4d48..aa27b1f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,6 +16,7 @@ dependencies = [
     "pydantic>=2.6.0",
     "pydantic-settings>=2.1.0",
     "structlog>=24.1.0",
+    "markdown>=3.5.0",
 ]
 
 [project.optional-dependencies]