diff --git a/src/Microsoft.AspNet.Owin/project.json b/src/Microsoft.AspNet.Owin/project.json
index 03fac148ca..014ce61ad1 100644
--- a/src/Microsoft.AspNet.Owin/project.json
+++ b/src/Microsoft.AspNet.Owin/project.json
@@ -10,7 +10,7 @@
     "net45": { },
     "k10": {
       "dependencies": {
-        "System.Collections": "4.0.0.0",
+        "System.Collections": "4.0.10.0",
         "System.ComponentModel": "4.0.0.0",
         "System.Diagnostics.Tools": "4.0.0.0",
         "System.Globalization": "4.0.10.0",