diff --git a/api/device/system-current.txt b/api/device/system-current.txt
index d802177..e6f50d0 100644
--- a/api/device/system-current.txt
+++ b/api/device/system-current.txt
@@ -1 +1 @@
-// Signature format: 2.0
+// Signature format: 4.0
diff --git a/api/device/system-removed.txt b/api/device/system-removed.txt
index d802177..e6f50d0 100644
--- a/api/device/system-removed.txt
+++ b/api/device/system-removed.txt
@@ -1 +1 @@
-// Signature format: 2.0
+// Signature format: 4.0
diff --git a/api/device/test-current.txt b/api/device/test-current.txt
index d802177..e6f50d0 100644
--- a/api/device/test-current.txt
+++ b/api/device/test-current.txt
@@ -1 +1 @@
-// Signature format: 2.0
+// Signature format: 4.0
diff --git a/api/device/test-removed.txt b/api/device/test-removed.txt
index d802177..e6f50d0 100644
--- a/api/device/test-removed.txt
+++ b/api/device/test-removed.txt
@@ -1 +1 @@
-// Signature format: 2.0
+// Signature format: 4.0
diff --git a/api/system/system-current.txt b/api/system/system-current.txt
index d802177..e6f50d0 100644
--- a/api/system/system-current.txt
+++ b/api/system/system-current.txt
@@ -1 +1 @@
-// Signature format: 2.0
+// Signature format: 4.0
diff --git a/api/system/system-removed.txt b/api/system/system-removed.txt
index d802177..e6f50d0 100644
--- a/api/system/system-removed.txt
+++ b/api/system/system-removed.txt
@@ -1 +1 @@
-// Signature format: 2.0
+// Signature format: 4.0
diff --git a/api/system/test-current.txt b/api/system/test-current.txt
index d802177..e6f50d0 100644
--- a/api/system/test-current.txt
+++ b/api/system/test-current.txt
@@ -1 +1 @@
-// Signature format: 2.0
+// Signature format: 4.0
diff --git a/api/system/test-removed.txt b/api/system/test-removed.txt
index d802177..e6f50d0 100644
--- a/api/system/test-removed.txt
+++ b/api/system/test-removed.txt
@@ -1 +1 @@
-// Signature format: 2.0
+// Signature format: 4.0