diff --git a/manage.py b/manage.py
index e3cb6d1..af5ef37 100644
--- a/manage.py
+++ b/manage.py
@@ -20,7 +20,7 @@ def run():
 
 @manager.command
 def init_db():
-    print("Creating all resources.")
+    print("Creating all available resources.")
     db.create_all()
 
 
diff --git a/requirements.txt b/requirements.txt
index 961e73e..87e8a79 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ itsdangerous==1.1.0
 Jinja2==2.10.1
 jsonschema==3.0.2
 MarkupSafe==1.1.1
-marshmallow==3.2.0
+marshmallow==6.0
 mypy-extensions==0.4.1
 numpy==1.17.0
 pandas==0.25.0