diff --git a/__init__.py b/__init__.py
index 67a301574900538773befb573daa0060c92ba527..42345bdd995796281efd1207c2cd04dea0c0b446 100644
--- a/__init__.py
+++ b/__init__.py
@@ -1,9 +1,6 @@
-# from flask_marshmallow import Marshmallow
 from flask_restx import Api
-
 from flask import Flask
 
-# import os
 
 __all__ = [
     "formats",
diff --git a/requirements-dev.txt b/requirements-dev.txt
new file mode 100644
index 0000000000000000000000000000000000000000..8ce1c9a8131fd3c84a5a51874d66933b0d85975e
--- /dev/null
+++ b/requirements-dev.txt
@@ -0,0 +1,6 @@
+Flask
+flask-restx
+flasgger
+flask-marshmallow
+openapi-schema-validator==0.4.1
+openapi-spec-validator==0.5.2
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index 584b2776c5f1856c1e97d79c384df58e41b27ae9..738135a2f8572fd172cd497f8207ad391d309b78 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,3 @@
 Flask
 flask-restx
 flasgger
-flask-marshmallow
\ No newline at end of file