diff --git a/pyproject.toml b/pyproject.toml
index 6febd8f..51e7fc0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ requires-python = ">=3.12"
 dependencies = [
     "click>=8.0",        # CLI framework
     "rich>=13.0",        # Terminal tables / pretty output
-    "flask>=3.0",        # Web browser UI
+    "flask>=3.1.3",        # Web browser UI
     "pandas>=2.0",       # DataFrame export to CSV/JSON
     "tabulate>=0.9",     # ASCII table formatting
 ]