diff --git a/src/si_ref_point/aboxes/constants_abox.py b/src/si_ref_point/aboxes/constants_abox.py
index 62aabc7..f1cf7f9 100644
--- a/src/si_ref_point/aboxes/constants_abox.py
+++ b/src/si_ref_point/aboxes/constants_abox.py
@@ -10,7 +10,7 @@
 from si_ref_point.tboxes.si_tbox import SiElements
 import si_ref_point.aboxes.symbols_format as sf
 from si_ref_point.settings import PKG_ROOT, CC_LICENCE, CC_LICENCE_TEXT_EN, CC_LICENCE_TEXT_FR, \
-    SI_FILES_FOLDER, GITHUB_BASE_PATH
+    SI_FILES_FOLDER, GITHUB_BASE_PATH, SIDFWBASE, SIRPVERSION
 from si_ref_point.aboxes.units_abox import transform_to_graph
 
 
@@ -46,6 +46,11 @@ def main():
                   "seven underpinning constants of the SI"),
                  datatype=XSD.string))
     )
+    
+    # SemVer
+    version_iri = URIRef(SIDFWBASE + "/" + SIRPVERSION + "/constants/")
+    constants_graph.add((URIRef(si_graph.namespace_constants), OWL.versionIRI, version_iri))
+    constants_graph.add((URIRef(si_graph.namespace_constants), OWL.versionInfo, Literal(SIRPVERSION, datatype=XSD.string)))
 
     # 2.2 Versioning (using PROVENANCE vocabulary)
     # The `timestamp` variable in the code is used to capture the current system time in UTC timezone.
@@ -58,6 +63,9 @@ def main():
         "%Y-%m-%dT%H:%M:%SZ")  # used with the predicate 'startedAtTime' of the corresponding activity
     repo = git.Repo(PKG_ROOT, search_parent_directories=True)
     sha = repo.head.object.hexsha
+
+
+
     #     2.2.1 Agent
     #     declare this code as an 'agent' (in the sense of PROVENANCE)
     #     and define URI to a specific version by using its commit on GitHub
diff --git a/src/si_ref_point/aboxes/decisions_abox.py b/src/si_ref_point/aboxes/decisions_abox.py
index 4062ee7..c35937c 100644
--- a/src/si_ref_point/aboxes/decisions_abox.py
+++ b/src/si_ref_point/aboxes/decisions_abox.py
@@ -3,9 +3,9 @@
 import os
 import yaml
 from datetime import date
-from rdflib import RDF, OWL, URIRef, RDFS, DCTERMS, Literal, SKOS, XSD
+from rdflib import Graph, RDF, OWL, URIRef, RDFS, DCTERMS, Literal, SKOS, XSD
 from si_ref_point.tboxes.si_tbox import SiElements
-from si_ref_point.settings import SI_FILES_FOLDER
+from si_ref_point.settings import SI_FILES_FOLDER, SIDFWBASE, SIRPVERSION
 
 def cap1(instr):
     """Utility method"""
@@ -13,19 +13,33 @@ def cap1(instr):
 
 def main():
     """main of Decision A-box"""
+    # get the predicates and classes that are common to all cuq files
     si_graph = SiElements()
 
-    # Annotations to the ontology (name, Version number)
-    si_graph.g.add((URIRef(si_graph.namespace_decisions), RDF.type, OWL.Ontology))
-    si_graph.g.add((URIRef(si_graph.namespace_decisions), SKOS.prefLabel,
+    # produce a separate graph for the decisions
+    decisions_graph = Graph()
+
+    # 1) Define the namespaces
+    decisions_graph.bind("si", si_graph.namespace)
+    decisions_graph.bind("decisions", si_graph.namespace_decisions)
+
+    # 2) Annotations to the ontology (name, Version number)
+    decisions_graph.add((URIRef(si_graph.namespace_decisions), RDF.type, OWL.Ontology))
+    decisions_graph.add((URIRef(si_graph.namespace_decisions), SKOS.prefLabel,
            Literal("SI Reference Point - Decisions", datatype=XSD.string)))
-    si_graph.g.add((URIRef(si_graph.namespace_decisions), RDFS.comment,
+    decisions_graph.add((URIRef(si_graph.namespace_decisions), RDFS.comment,
            Literal("Ontology, part of the SI reference point, "
                    "covering decisions",
                    datatype=XSD.string)))
-    si_graph.g.add((URIRef(si_graph.namespace_decisions), DCTERMS.created,
+    decisions_graph.add((URIRef(si_graph.namespace_decisions), DCTERMS.created,
            Literal(str(date.today()), datatype=XSD.date)))
 
+    # SemVer
+
+    version_iri = URIRef(SIDFWBASE + "/" + SIRPVERSION + "/decisions/")
+    decisions_graph.add((URIRef(si_graph.namespace_decisions), OWL.versionIRI, version_iri))
+    decisions_graph.add((URIRef(si_graph.namespace_decisions), OWL.versionInfo, Literal(SIRPVERSION, datatype=XSD.string)))
+
     # crawl through the items of the YAML file
     with open(os.path.join(SI_FILES_FOLDER, 'decisions.yaml'),
               encoding="utf8") as fp:
@@ -34,44 +48,44 @@ def main():
         # create an instance of scope if necessary, using the scope code as
         # local name [TODO] : is it really only doing it if necessary ?
         scope = si_graph.set_decision_uri(dec['scopeCode'])
-        si_graph.g.add((scope, RDF.type, si_graph.si_decision_scope))
+        decisions_graph.add((scope, RDF.type, si_graph.si_decision_scope))
         # add labels to scope (capitalize the first character)
-        si_graph.g.add((scope, RDFS.label,
+        decisions_graph.add((scope, RDFS.label,
                Literal(cap1(dec['scopeEN']), lang="en")))
-        si_graph.g.add((scope, RDFS.label,
+        decisions_graph.add((scope, RDFS.label,
                Literal(cap1(dec['scopeFR']), lang="fr")))
         # create instance of target if necessary using target code as local
         # name
         target = si_graph.set_decision_uri(dec['targetCode'])
-        si_graph.g.add((target, RDF.type, si_graph.si_decision_target))
+        decisions_graph.add((target, RDF.type, si_graph.si_decision_target))
         # add labels to target
-        si_graph.g.add((target, RDFS.label,
+        decisions_graph.add((target, RDFS.label,
                Literal(cap1(dec['targetEN']), lang="en")))
-        si_graph.g.add((target, RDFS.label,
+        decisions_graph.add((target, RDFS.label,
                Literal(cap1(dec['targetFR']), lang="fr")))
         # add links between target and scope
-        si_graph.g.add((scope, si_graph.has_target, target))
-        si_graph.g.add((target, si_graph.is_target_of, scope))
+        decisions_graph.add((scope, si_graph.has_target, target))
+        decisions_graph.add((target, si_graph.is_target_of, scope))
         # create instance of decision if necessary using decision code as local
         # name
         decision = si_graph.set_decision_uri(dec['decisionCode'])
-        si_graph.g.add((decision, RDF.type, si_graph.si_decision))
+        decisions_graph.add((decision, RDF.type, si_graph.si_decision))
         # add labels to decision
-        si_graph.g.add((decision, RDFS.label,
+        decisions_graph.add((decision, RDFS.label,
                Literal(cap1(dec['decisionEN']), lang="en")))
-        si_graph.g.add((decision, RDFS.label,
+        decisions_graph.add((decision, RDFS.label,
                Literal(cap1(dec['decisionFR']), lang="fr")))
         # add links between decision and target
-        si_graph.g.add((target, si_graph.has_decision, decision))
-        si_graph.g.add((decision, si_graph.is_decision_of, target))
+        decisions_graph.add((target, si_graph.has_decision, decision))
+        decisions_graph.add((decision, si_graph.is_decision_of, target))
         # add link between decision and resolution (retrieved from one of
         # cgpm.ttl, cipm.ttl or cctf.ttl) using the ‘correspondingResolution’
         # object property
-        si_graph.g.add((decision, si_graph.corresponding_resolution,
+        decisions_graph.add((decision, si_graph.corresponding_resolution,
                si_graph.set_resolution_uri(dec['ID-resolution'])))
         if 'crossReferences' in dec:
             for xref in dec['crossReferences']:
                 # add link between decision and the cross-referenced decision
-                si_graph.g.add((decision, SKOS.related, si_graph.set_decision_uri(xref)))
+                decisions_graph.add((decision, SKOS.related, si_graph.set_decision_uri(xref)))
 
-    return si_graph.g
+    return decisions_graph
diff --git a/src/si_ref_point/aboxes/prefixes_abox.py b/src/si_ref_point/aboxes/prefixes_abox.py
index 69a9656..560f803 100644
--- a/src/si_ref_point/aboxes/prefixes_abox.py
+++ b/src/si_ref_point/aboxes/prefixes_abox.py
@@ -8,7 +8,8 @@
 from decimal import Decimal
 from rdflib import Graph, URIRef, RDF, OWL, SKOS, XSD, RDFS, DCTERMS, Literal, PROV
 from si_ref_point.tboxes.si_tbox import SiElements
-from si_ref_point.settings import PKG_ROOT, CC_LICENCE, CC_LICENCE_TEXT_EN, CC_LICENCE_TEXT_FR, SI_FILES_FOLDER, GITHUB_BASE_PATH
+from si_ref_point.settings import PKG_ROOT, CC_LICENCE, CC_LICENCE_TEXT_EN, CC_LICENCE_TEXT_FR, SI_FILES_FOLDER, \
+    GITHUB_BASE_PATH, SIDFWBASE, SIRPVERSION
 
 
 def main():
@@ -20,8 +21,8 @@ def main():
     prefix_graph = Graph()
 
     # 1) Define the namespaces within (base)/SI
-    prefix_graph.bind("prefixes",si_graph.namespace_prefixes)
-    prefix_graph.bind("si",si_graph.namespace)
+    prefix_graph.bind("prefixes", si_graph.namespace_prefixes)
+    prefix_graph.bind("si", si_graph.namespace)
 
     # 2) Annotations to the prefix-graph
 
@@ -43,6 +44,11 @@ def main():
                    "prefixes for the SI measurement units."))
     )
 
+    # SemVer
+    version_iri = URIRef(SIDFWBASE + "/" + SIRPVERSION + "/prefixes/")
+    prefix_graph.add((URIRef(si_graph.namespace_prefixes), OWL.versionIRI, version_iri))
+    prefix_graph.add((URIRef(si_graph.namespace_prefixes), OWL.versionInfo, Literal(SIRPVERSION, datatype=XSD.string)))
+
     # 2.2 Versioning (using PROVENANCE vocabulary)
     timestamp = datetime.now(timezone.utc)                              # get the system time (in UTC)
     uri_timestamp = timestamp.strftime("%Y%m%d%H%M%SZ")                 # used to identify uniquely the produced TTL file (entity)
diff --git a/src/si_ref_point/aboxes/quantities_abox.py b/src/si_ref_point/aboxes/quantities_abox.py
index a18b802..78b6af7 100644
--- a/src/si_ref_point/aboxes/quantities_abox.py
+++ b/src/si_ref_point/aboxes/quantities_abox.py
@@ -8,7 +8,8 @@
 from rdflib import Graph, RDF, OWL, URIRef, RDFS, DCTERMS, Literal, SKOS, XSD, PROV
 from si_ref_point.tboxes.si_tbox import SiElements
 from si_ref_point.aboxes.units_abox import transform_to_graph
-from si_ref_point.settings import PKG_ROOT, CC_LICENCE, CC_LICENCE_TEXT_EN, CC_LICENCE_TEXT_FR, SI_FILES_FOLDER, GITHUB_BASE_PATH
+from si_ref_point.settings import PKG_ROOT, CC_LICENCE, CC_LICENCE_TEXT_EN, CC_LICENCE_TEXT_FR, SI_FILES_FOLDER, \
+    GITHUB_BASE_PATH, SIDFWBASE, SIRPVERSION
 
 
 def main():
@@ -46,6 +47,11 @@ def main():
                    datatype=XSD.string))
     )
 
+    # SemVer
+    version_iri = URIRef(SIDFWBASE + "/" + SIRPVERSION + "/quantities/")
+    quantities_graph.add((URIRef(si_graph.namespace_quantities), OWL.versionIRI, version_iri))
+    quantities_graph.add((URIRef(si_graph.namespace_quantities), OWL.versionInfo, Literal(SIRPVERSION, datatype=XSD.string)))
+
     # 2.2 Versioning (using PROVENANCE vocabulary)
     timestamp = datetime.now(timezone.utc)                              # get the system time (in UTC)
     uri_timestamp = timestamp.strftime("%Y%m%d%H%M%SZ")                 # used to identify uniquely the produced TTL file (entity)
diff --git a/src/si_ref_point/aboxes/rb_utils.py b/src/si_ref_point/aboxes/rb_utils.py
index cfcb6ac..c3cb617 100644
--- a/src/si_ref_point/aboxes/rb_utils.py
+++ b/src/si_ref_point/aboxes/rb_utils.py
@@ -6,7 +6,7 @@
 from rdflib import Graph, Literal, Namespace, URIRef
 from rdflib.namespace import DCTERMS, OWL, RDF, RDFS, SKOS, XSD
 from si_ref_point.tboxes.rb_tbox import RES_BOD_NS
-from si_ref_point.settings import SIDFWBASE
+from si_ref_point.settings import SIDFWBASE, SIRPVERSION
 
 RB = Namespace(RES_BOD_NS)
 
@@ -63,6 +63,12 @@ def add_general_description(self):
             )
         )
 
+        # SemVer
+        version_iri = URIRef(SIDFWBASE + "/" + SIRPVERSION + "/bodies/" + self.own_acronym + "#")
+        self.g.add((URIRef(self.OWN_NS), OWL.versionIRI, version_iri))
+        self.g.add((URIRef(self.OWN_NS), OWL.versionInfo, Literal(SIRPVERSION, datatype=XSD.string)))
+
+        
         self.g.add(
             (
                 URIRef(self.OWN_NS),
diff --git a/src/si_ref_point/aboxes/units_abox.py b/src/si_ref_point/aboxes/units_abox.py
index 2dce6bb..30e1ce8 100644
--- a/src/si_ref_point/aboxes/units_abox.py
+++ b/src/si_ref_point/aboxes/units_abox.py
@@ -11,7 +11,8 @@
 from rdflib import Graph, URIRef, BNode, Literal, RDF, OWL, SKOS, XSD, RDFS, DCTERMS, PROV
 from si_ref_point.tboxes.si_tbox import SiElements
 import si_ref_point.aboxes.symbols_format as sf
-from si_ref_point.settings import PKG_ROOT, CC_LICENCE, CC_LICENCE_TEXT_EN, CC_LICENCE_TEXT_FR, SI_FILES_FOLDER, GITHUB_BASE_PATH
+from si_ref_point.settings import PKG_ROOT, CC_LICENCE, CC_LICENCE_TEXT_EN, CC_LICENCE_TEXT_FR, SI_FILES_FOLDER, \
+    GITHUB_BASE_PATH, SIDFWBASE, SIRPVERSION
 
 
 def nest_mult(expr):
@@ -171,6 +172,11 @@ def main():
                 datatype=XSD.string))
     )
 
+    # SemVer
+    version_iri = URIRef(SIDFWBASE + "/" + SIRPVERSION + "/units/")
+    units_graph.add((URIRef(si_graph.namespace_units), OWL.versionIRI, version_iri))
+    units_graph.add((URIRef(si_graph.namespace_units), OWL.versionInfo, Literal(SIRPVERSION, datatype=XSD.string)))
+
     # 2.2 Versioning (using PROVENANCE vocabulary)
     timestamp = datetime.now(timezone.utc)                              # get the system time (in UTC)
     uri_timestamp = timestamp.strftime("%Y%m%d%H%M%SZ")                 # used to identify uniquely the produced TTL file (entity)
diff --git a/src/si_ref_point/settings.py b/src/si_ref_point/settings.py
index 150961e..41cd78c 100644
--- a/src/si_ref_point/settings.py
+++ b/src/si_ref_point/settings.py
@@ -11,6 +11,7 @@
 SKOSURL = "http://www.w3.org/2004/02/skos/core#"
 DCTURL = "http://purl.org/dc/terms#"
 SIDFWBASE = "https://si-digital-framework.org"
+SIRPVERSION = "1.0.0"
 
 # Base URL for the SI Digital Framework
 # from this URL, sub-URLs are defined
@@ -35,7 +36,7 @@
 # TTL_FILES_FOLDER = TTLPATH
 # JSONLD_FILES_FOLDER = JLDPATH
 
-GITHUB_BASE_PATH = "https://github.com/TheBIPM/SI-Reference-Point-2023/"
+GITHUB_BASE_PATH = "https://github.com/TheBIPM/SI-Reference-Point-generation-scripts/"
 
 # SI_BROCHURE_PID="SI_Brochure_ed3_V3_01" # will be transformed into a PID '(SIDFWBASE)/SI/entities/(SI_BROCHURE_PID)'
 
diff --git a/src/si_ref_point/tboxes/rb_tbox.py b/src/si_ref_point/tboxes/rb_tbox.py
index 17bf6bd..3b3a850 100644
--- a/src/si_ref_point/tboxes/rb_tbox.py
+++ b/src/si_ref_point/tboxes/rb_tbox.py
@@ -2,13 +2,18 @@
 
 from datetime import date
 from rdflib import URIRef, RDF, OWL, SKOS, XSD, RDFS, DCTERMS, Graph, Literal
-from si_ref_point.settings import SIDFWBASE, SKOSURL
+from si_ref_point.settings import SIDFWBASE, SKOSURL, SIRPVERSION
 
 RES_BOD_NS = SIDFWBASE + "/bodies#"
 
 class ResBod:
     def __init__(self, namespace: str = RES_BOD_NS, prefix: str = 'rb'):
+
+    # 1) Define namespaces
         self.namespace = namespace
+
+    # 2) Add annotations to the ontology
+    #   2.1 General annotations (type, comments etc)
         self._g = Graph()  # a triple store as the main data structure
         self._g.bind(prefix, namespace)
         self._g.bind("skos", SKOSURL)
@@ -21,6 +26,14 @@ def __init__(self, namespace: str = RES_BOD_NS, prefix: str = 'rb'):
                              "resolutions, decisions, etc", datatype=XSD.string)))
         self._g.add((URIRef(RES_BOD_NS), DCTERMS.created, Literal(str(date.today()), datatype=XSD.date)))
 
+    #   2.2 Versioning
+    
+        version_iri = URIRef(SIDFWBASE + "/" + SIRPVERSION + "/bodies#")
+        self._g.add((URIRef(self.namespace), OWL.versionIRI, version_iri))
+        self._g.add((URIRef(self.namespace), OWL.versionInfo, Literal(SIRPVERSION, datatype=XSD.string)))
+
+
+    # 3) Define classes and predicates used by different A boxes
         self.ResBod = self.set_uri('ResBod')
         self._g.add((self.ResBod, RDF.type, SKOS.Concept))
         self._g.add((self.ResBod, RDFS.label, Literal('Responsible Body', lang='en')))
diff --git a/src/si_ref_point/tboxes/si_tbox.py b/src/si_ref_point/tboxes/si_tbox.py
index ef95401..795c434 100644
--- a/src/si_ref_point/tboxes/si_tbox.py
+++ b/src/si_ref_point/tboxes/si_tbox.py
@@ -8,7 +8,9 @@
 from rdflib import Graph, OWL, RDF, RDFS, URIRef, Literal, BNode, SKOS, PROV
 from rdflib.collection import Collection
 from rdflib.namespace import XSD, DCTERMS
-from si_ref_point.settings import PKG_ROOT, CC_LICENCE, CC_LICENCE_TEXT_EN, CC_LICENCE_TEXT_FR, SI_FILES_FOLDER, GITHUB_BASE_PATH, SIDFWBASE
+from si_ref_point.settings import PKG_ROOT, CC_LICENCE, CC_LICENCE_TEXT_EN, CC_LICENCE_TEXT_FR, SI_FILES_FOLDER, \
+    GITHUB_BASE_PATH, SIDFWBASE, SIRPVERSION
+
 
 RES_BOD_NS = SIDFWBASE + "/bodies#"
 bodies_list = ['cgpm', 'cipm', 'cctf']
@@ -36,6 +38,9 @@ def __init__(self, namespace: str = SIDFWBASE + "/SI#", ns_prefix: str = "si"):
         self.namespace_constants = SIDFWBASE + "/constants/"
         # Explicitly binding a constants namespace to the URI
         self.g.bind("constants", self.namespace_constants)
+        
+        # Explicitly binding a decisions namespace to the URI
+        self.g.bind("decisions", self.namespace_decisions)
 
        # Define the namespaces within (base)/bodies
         # ~/bodies
@@ -94,6 +99,10 @@ def __init__(self, namespace: str = SIDFWBASE + "/SI#", ns_prefix: str = "si"):
         uri_timestamp = timestamp.strftime("%Y%m%d%H%M%SZ")                 # used to identify uniquely the produced TTL file (entity)
         startedAt_timestamp = timestamp.strftime("%Y-%m-%dT%H:%M:%SZ")      # used with the predicate 'startedAtTime' of the corresponding activity
 
+        version_iri = URIRef(SIDFWBASE + "/" + SIRPVERSION + "/SI#")
+        self.g.add((URIRef(self.namespace), OWL.versionIRI, version_iri))
+        self.g.add((URIRef(self.namespace), OWL.versionInfo, Literal(SIRPVERSION, datatype=XSD.string)))
+        
 ### `generate_turtle_files`
         repo = git.Repo(PKG_ROOT, search_parent_directories=True)
         sha = repo.head.object.hexsha