diff --git a/requirements-dev.txt b/requirements-dev.txt
index d62637378e..c24a6bc6d4 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -3,11 +3,7 @@ pytest>=2.8.0,<=6.2.5
 pytest-cov
 pytest-httpbin==2.0.0
 pytest-mock==2.0.0
-httpbin==0.7.0
+httpbin==0.10.0
 trustme
 wheel
 cryptography<40.0.0; python_version <= '3.7' and platform_python_implementation == 'PyPy'
-
-# Flask Stack
-Flask>1.0,<2.0
-markupsafe<2.1