diff --git a/framework/api/test-current.txt b/framework/api/test-current.txt
index e69de29..d802177 100644
--- a/framework/api/test-current.txt
+++ b/framework/api/test-current.txt
@@ -0,0 +1 @@
+// Signature format: 2.0
diff --git a/framework/api/test-removed.txt b/framework/api/test-removed.txt
index e69de29..d802177 100644
--- a/framework/api/test-removed.txt
+++ b/framework/api/test-removed.txt
@@ -0,0 +1 @@
+// Signature format: 2.0