diff --git a/_updatePublisher.bat b/_updatePublisher.bat
index 67aebf5834..10fee38155 100644
--- a/_updatePublisher.bat
+++ b/_updatePublisher.bat
@@ -8,6 +8,8 @@ SET input_cache_path=%CD%\input-cache\
 SET skipPrompts=false
 
 SET scriptdlroot=https://raw.githubusercontent.com/HL7/ig-publisher-scripts/main
+SET build_bat_url=%scriptdlroot%/_build.bat
+SET build_sh_url=%scriptdlroot%/_build.sh
 SET update_bat_url=%scriptdlroot%/_updatePublisher.bat
 SET gen_bat_url=%scriptdlroot%/_genonce.bat
 SET gencont_bat_url=%scriptdlroot%/_gencontinuous.bat
@@ -20,7 +22,7 @@ IF "%~1"=="/f" SET skipPrompts=y
 
 ECHO.
 ECHO Checking internet connection...
-PING tx.fhir.org -4 -n 1 -w 1000 | FINDSTR TTL && GOTO isonline
+PING tx.fhir.org -4 -n 1 -w 4000 | FINDSTR TTL && GOTO isonline
 ECHO We're offline, nothing to do...
 GOTO end
 
@@ -69,6 +71,7 @@ IF DEFINED FORCE (
 IF "%skipPrompts%"=="y" (
 	SET create=Y
 ) ELSE (
+	ECHO Will place publisher jar here: %input_cache_path%%publisher_jar%
 	SET /p create="Ok? (Y/N) "
 )
 IF /I "%create%"=="Y" (
@@ -211,6 +214,16 @@ goto end
 start copy /y "_updatePublisher.new.bat" "_updatePublisher.bat" ^&^& del "_updatePublisher.new.bat" ^&^& exit
 
 
+:dl_script_7
+ECHO Updating _build.bat
+call POWERSHELL -command if ('System.Net.WebClient' -as [type]) {(new-object System.Net.WebClient).DownloadFile(\"%build_bat_url%\",\"_build.new.bat\") } else { Invoke-WebRequest -Uri "%update_bat_url%" -Outfile "_build.new.bat" }
+if %ERRORLEVEL% == 0 goto upd_script_6
+echo "Errors encountered during download: %errorlevel%"
+goto end
+:upd_script_6
+start copy /y "_build.new.bat" "_build.bat" ^&^& del "_build.new.bat" ^&^& exit
+
+
 :end
 
 
diff --git a/_updatePublisher.sh b/_updatePublisher.sh
index 0f9ecbed9c..6a97fe0bdb 100755
--- a/_updatePublisher.sh
+++ b/_updatePublisher.sh
@@ -12,6 +12,8 @@ gencont_bat_url=$scriptdlroot/_gencontinuous.bat
 gencont_sh_url=$scriptdlroot/_gencontinuous.sh
 gen_sh_url=$scriptdlroot/_genonce.sh
 update_sh_url=$scriptdlroot/_updatePublisher.sh
+build_sh_url=$scriptdlroot/_build.sh
+build_bat_url=$scriptdlroot/_build.bat
 
 skipPrompts=false
 FORCE=false
@@ -103,6 +105,16 @@ if [[ $skipPrompts != true ]]; then
 if [[ $skipPrompts == true ]] || [[ $response =~ ^[yY].*$ ]]; then
   echo "Downloading most recent scripts "
 
+  curl -L $build_bat_url -o /tmp/_build.new
+  cp /tmp/_build.new _build.bat
+  rm /tmp/_build.new
+
+
+  curl -L $build_sh_url -o /tmp/_build.new
+  cp /tmp/_build.new _build.sh
+  chmod +x _build.sh
+  rm /tmp/_build.new
+
   curl -L $update_bat_url -o /tmp/_updatePublisher.new
   cp /tmp/_updatePublisher.new _updatePublisher.bat
   rm /tmp/_updatePublisher.new
@@ -129,4 +141,4 @@ if [[ $skipPrompts == true ]] || [[ $response =~ ^[yY].*$ ]]; then
   cp /tmp/_updatePublisher.new _updatePublisher.sh
   chmod +x _updatePublisher.sh
   rm /tmp/_updatePublisher.new
-fi
+fi
\ No newline at end of file
diff --git a/input/fsh/aliases.fsh b/input/fsh/aliases.fsh
index 2382f135fe..75c3587f7e 100644
--- a/input/fsh/aliases.fsh
+++ b/input/fsh/aliases.fsh
@@ -100,3 +100,6 @@ Alias: $fr-core-schedule-unavailability-reason = https://hl7.fr/ig/fhir/core/Val
 // SD
 Alias: $fr-core-observation-level-of-exertion = https://hl7.fr/ig/fhir/core/StructureDefinition/fr-core-observation-level-of-exertion // A corriger
 
+
+
+Alias: $patient-multiple-birth-r5 = http://hl7.org/fhir/5.0/StructureDefinition/extension-Patient.multipleBirth[x]
\ No newline at end of file
diff --git a/input/fsh/extensions/FRCorePatientMultipleBirthExtension.fsh b/input/fsh/extensions/FRCorePatientMultipleBirthExtension.fsh
deleted file mode 100644
index d0a28bf188..0000000000
--- a/input/fsh/extensions/FRCorePatientMultipleBirthExtension.fsh
+++ /dev/null
@@ -1,10 +0,0 @@
-Extension: FRCorePatientMultipleBirthExtension
-Id: fr-core-patient-multiple-birth-r5
-Title: "Rang Gémellaire"
-Description: "Extension créée pour exprimer le rang gémellaire, notamment utile dans le cadre des attestations de droits à l'assurance maladie. Cette extension implemente l'élément PatientMultipleBirth de R5 https://www.hl7.org/fhir/patient-definitions.html#Patient.multipleBirth_x."
-* ^context.type = #element
-* ^context.expression = "Patient"
-* ^url = "http://hl7.org/fhir/5.0/StructureDefinition/extension-Patient.multipleBirth"
-  
-* value[x] only integer
-* value[x] ^short = "Indicates the actual birth order (integer)."
\ No newline at end of file
diff --git a/input/fsh/profiles/FRCorePatientProfile.fsh b/input/fsh/profiles/FRCorePatientProfile.fsh
index 26552a900d..a6f102a82a 100644
--- a/input/fsh/profiles/FRCorePatientProfile.fsh
+++ b/input/fsh/profiles/FRCorePatientProfile.fsh
@@ -22,7 +22,11 @@ Description: """Profile of the Patient resource for France. This profile specifi
     FRCorePatientDeathPlaceExtension named deathPlace 0..1 and
     FRCorePatientBirthDateUpdateIndicatorExtension named birthDateUpdateIndicator 0..1 and
     $patient-birthPlace named birthPlace 0..1 and
-    FRCorePatientMultipleBirthExtension named multipleBirth 0..1
+    $patient-multiple-birth-r5 named multipleBirth-r5 0..1
+
+* extension[multipleBirth-r5]
+  * value[x] only integer
+  * ^short = "Whether patient is part of a multiple birth"
 
 * extension[birthPlace].valueAddress only FRCoreAddressProfile
 
diff --git a/sushi-config.yaml b/sushi-config.yaml
index 44f85a6253..6b22e82bcf 100644
--- a/sushi-config.yaml
+++ b/sushi-config.yaml
@@ -20,6 +20,7 @@ jurisdiction: urn:iso:std:iso:3166#FR "France"
 
 dependencies:
   ans.fr.terminologies: latest
+  hl7.fhir.extensions.r5: 4.0.1
 
 #La liste des paramètres ainsi que leur explication est disponible ici : https://build.fhir.org/ig/FHIR/fhir-tools-ig/CodeSystem-ig-parameters.html
 parameters: