diff --git a/test/Microsoft.DotNet.ProjectJsonMigration.Tests/project.json b/test/Microsoft.DotNet.ProjectJsonMigration.Tests/project.json
index c996cbadf..7009d4819 100644
--- a/test/Microsoft.DotNet.ProjectJsonMigration.Tests/project.json
+++ b/test/Microsoft.DotNet.ProjectJsonMigration.Tests/project.json
@@ -1,7 +1,8 @@
 {
   "version": "1.0.0-*",
   "buildOptions": {
-    "copyToOutput": ["MSBuild.exe", "MSBuild.exe.config"]
+    "copyToOutput": ["MSBuild.exe", "MSBuild.exe.config"],
+    "keyFile": "../../tools/Key.snk"
   },
   "dependencies": {
     "Microsoft.NETCore.App": {