diff --git a/scitt-scripts/create_hashed_signed_statement.py b/scitt-scripts/create_hashed_signed_statement.py
index 04c1705..644d0d2 100644
--- a/scitt-scripts/create_hashed_signed_statement.py
+++ b/scitt-scripts/create_hashed_signed_statement.py
@@ -20,7 +20,7 @@
 
 # CWT header label comes from version 4 of the scitt architecture document
 # https://www.ietf.org/archive/id/draft-ietf-scitt-architecture-04.html#name-issuer-identity
-HEADER_LABEL_CWT = 13
+HEADER_LABEL_CWT = 15
 
 # Various CWT header labels come from:
 # https://www.rfc-editor.org/rfc/rfc8392.html#section-3.1
diff --git a/scitt-scripts/create_signed_statement.py b/scitt-scripts/create_signed_statement.py
index 2d42a40..ff16c1b 100755
--- a/scitt-scripts/create_signed_statement.py
+++ b/scitt-scripts/create_signed_statement.py
@@ -24,7 +24,7 @@
 
 # CWT header label comes from version 4 of the scitt architecture document
 # https://www.ietf.org/archive/id/draft-ietf-scitt-architecture-04.html#name-issuer-identity
-HEADER_LABEL_CWT = 13
+HEADER_LABEL_CWT = 15
 
 # Various CWT header labels come from:
 # https://www.rfc-editor.org/rfc/rfc8392.html#section-3.1
diff --git a/scitt-scripts/register_signed_statement.py b/scitt-scripts/register_signed_statement.py
index b5d892e..076d70d 100644
--- a/scitt-scripts/register_signed_statement.py
+++ b/scitt-scripts/register_signed_statement.py
@@ -13,7 +13,7 @@
 
 # CWT header label comes from version 4 of the scitt architecture document
 # https://www.ietf.org/archive/id/draft-ietf-scitt-architecture-04.html#name-issuer-identity
-HEADER_LABEL_CWT = 13
+HEADER_LABEL_CWT = 15
 
 # Various CWT header labels come from:
 # https://www.rfc-editor.org/rfc/rfc8392.html#section-3.1