diff --git a/pyproject.toml b/pyproject.toml
index b0a6a82..599c6bd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -69,11 +69,11 @@ Discussions = "https://github.com/Mullassery/PyStreamXL/discussions"
 dev = [
     "pytest>=7.0",
     "pytest-cov>=4.0",
-    "flask>=2.0",
+    "flask>=3.1.3",
     "openpyxl>=3.0",
 ]
 server = [
-    "flask>=2.0",
+    "flask>=3.1.3",
 ]
 
 [tool.maturin]