diff --git a/src/Microsoft.AspNet.Session/project.json b/src/Microsoft.AspNet.Session/project.json
index 9a4551e48a..b43613f7e6 100644
--- a/src/Microsoft.AspNet.Session/project.json
+++ b/src/Microsoft.AspNet.Session/project.json
@@ -13,7 +13,8 @@
   },
   "compilationOptions": {
     "allowUnsafe": true,
-    "warningsAsErrors": true
+    "warningsAsErrors": true,
+    "keyFile": "../../tools/Key.snk"
   },
   "frameworks": {
     "net451": {},
diff --git a/tools/Key.snk b/tools/Key.snk
new file mode 100644
index 0000000000..e10e4889c1
Binary files /dev/null and b/tools/Key.snk differ