diff --git a/IEEE1609dot2.asn b/IEEE1609dot2.asn
old mode 100755
new mode 100644
index 0bd2f17964c5cf3d06b37fd58c06693cf9dfbd95..a5f760af33b6afdddd3d8142c7eb665118f65f37
--- a/IEEE1609dot2.asn
+++ b/IEEE1609dot2.asn
@@ -1,8 +1,6 @@
 IEEE1609dot2 {iso(1) identified-organization(3) ieee(111) 
 standards-association-numbered-series-standards(2) wave-stds(1609)  
-dot2(2) base(1) schema(1) major-version-2(2)}
-
--- Minor version: 2
+dot2(2) base(1) schema(1) major-version-2(2) minor-version-3(3)}
 
 --******************************************************************************
 -- 
@@ -52,8 +50,11 @@ FROM IEEE1609dot2BaseTypes {iso(1) identified-organization(3) ieee(111)
     standards-association-numbered-series-standards(2) wave-stds(1609)  
     dot2(2) base(1) base-types(2) major-version-2 (2)}
 
+EtsiOriginatingHeaderInfoExtension 
+FROM EtsiTs103097ExtensionModule {itu-t(0) identified-organization(4)
+    etsi(0) itsDomain(5) wg5(5) secHeaders(103097) extension(2)
+    version1(1)} WITH SUCCESSORS
 ;
-
 -- 
 --********************************************************************* 
 -- 
@@ -109,7 +110,9 @@ ToBeSignedData ::= SEQUENCE  {
 
 HashedData::= CHOICE  { 
     sha256HashedData  OCTET STRING (SIZE(32)),
-    ...
+    ...,
+    sha384HashedData  OCTET STRING (SIZE(48)),
+    reserved          OCTET STRING (SIZE(32))
 }
 
 HeaderInfo ::= SEQUENCE  { 
@@ -123,9 +126,33 @@ HeaderInfo ::= SEQUENCE  {
     ...,
     inlineP2pcdRequest     SequenceOfHashedId3 OPTIONAL,
     requestedCertificate Certificate OPTIONAL,
-    pduFunctionalType PduFunctionalType OPTIONAL
+    pduFunctionalType      PduFunctionalType OPTIONAL,
+    contributedExtensions  ContributedExtensionBlocks OPTIONAL
+}
+
+ContributedExtensionBlocks ::= SEQUENCE (SIZE(1..MAX)) OF ContributedExtensionBlock
+
+ContributedExtensionBlock ::= SEQUENCE {
+    contributorId IEEE1609DOT2-HEADERINFO-CONTRIBUTED-EXTENSION.
+              &id({Ieee1609dot2HeaderInfoContributedExtensions}),
+    extns   SEQUENCE (SIZE(1..MAX)) OF IEEE1609DOT2-HEADERINFO-CONTRIBUTED-EXTENSION.
+              &Extn({Ieee1609dot2HeaderInfoContributedExtensions}{@.contributorId})
+}
+
+IEEE1609DOT2-HEADERINFO-CONTRIBUTED-EXTENSION ::= CLASS {
+    &id    HeaderInfoContributorId UNIQUE,
+    &Extn
+} WITH SYNTAX {&Extn IDENTIFIED BY &id}
+
+Ieee1609dot2HeaderInfoContributedExtensions 
+    IEEE1609DOT2-HEADERINFO-CONTRIBUTED-EXTENSION ::= {
+    {EtsiOriginatingHeaderInfoExtension IDENTIFIED BY etsiHeaderInfoContributorId},
+    ...
 }
 
+HeaderInfoContributorId ::= INTEGER (0..255)
+    etsiHeaderInfoContributorId         HeaderInfoContributorId ::= 2
+
 MissingCrlIdentifier ::= SEQUENCE  {
     cracaId         HashedId3,
     crlSeries       CrlSeries,
diff --git a/IEEE1609dot2BaseTypes.asn b/IEEE1609dot2BaseTypes.asn
old mode 100755
new mode 100644
diff --git a/README.md b/README.md
index 656b9cf4352b36c26881a4bc8555398cc1d01594..189831e4bc3febb4223445c7c38c9f8436b803bf 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,17 @@
-# The IEEE 1609.2 ASN.1 module
+# ASN.1 module for ETSI TS 103 097 v1.4.1
 
-The ASN.1 module contained in the **IEEE Std 1609.2b™-2019**: "IEEE Standard for Wireless Access in Vehicular Environments -- Security Services for Applications and Management Messages",
-  as amended by IEEE Std 1609.2a™-2017: "Standard for Wireless Access In Vehicular Environments -- Security Services for Applications and Management Messages Amendment 1 and 2".
+The module was published as a part of delivery **[ETSI TS 103 097 v1.4.1](http://www.etsi.org/deliver/etsi_ts/103000_103099/103097/01.04.01_60/ts_103097v010401p.pdf)**
 
-This repository provides a copy of the ASN.1 modules from IEEE Std 1609.2 and its amendments (a)-2016 and (b)-2019, reprinted with permission from IEEE, Copyright © 2016.
+## License
 
-This module was published as a part of **[ETSI TS 103 097 v1.4.1](http://www.etsi.org/deliver/etsi_ts/103000_103099/103097/01.04.01_60/ts_103097v010401p.pdf)**.
+The content of this repository and the files contained are released under the BSD-3-Clause license.
+
+See the attached LICENSE file or visit https://forge.etsi.org/legal-matters.
+
+## Dependencies
+
+The module dependens of the following external modules and repositories:
+
+* The **[IEEE1609dot2](https://forge.etsi.org/rep/ITS/asn1/ieee1609.2/tree/WI-00557)** module from the  **IEEE Std 1609.2** - WAVE - Security Services for Applications and Management Messages
+
+*NOTE: Please use  `--recurse-submodules` option in order to clone the module with all necessary dependencies.*