diff --git a/setup.cfg b/setup.cfg
index 122b38b..a0d3706 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -16,9 +16,7 @@ keywords =
     algotrading
 classifiers =
     Development Status :: 5 - Production/Stable
-    Operating System :: Microsoft :: Windows
-    Operating System :: POSIX :: Linux
-    Operating System :: APPLE :: MacOS
+    Operating System :: OS Independent
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3.7
     Topic :: Office/Business :: Financial :: Investment