diff --git a/build/communes.js b/build/communes.js
index 1e24e10..9642fbd 100644
--- a/build/communes.js
+++ b/build/communes.js
@@ -39,6 +39,7 @@ async function buildCommunes() {
         code: commune.code,
         type: commune.type,
         nom: commune.nom,
+        siren: commune.siren,
         codeDepartement: commune.departement,
         codeRegion: commune.region,
         codesPostaux: commune.codesPostaux || [],
diff --git a/definition.yml b/definition.yml
index 4ade29f..d07b3fa 100644
--- a/definition.yml
+++ b/definition.yml
@@ -19,6 +19,7 @@ parameters:
         - nom
         - code
         - codesPostaux
+        - siren
         - centre
         - surface
         - contour
@@ -37,6 +38,7 @@ parameters:
       - nom
       - code
       - codesPostaux
+      - siren
       - codeEpci
       - codeDepartement
       - codeRegion
@@ -171,6 +173,10 @@ paths:
           in: query
           description: Code de la commune
           type: string
+        - name: siren
+          in: query
+          description: Code SIREN de la commune
+          type: string
         - name: codeEpci
           in: query
           description: Code de l'EPCI associé
@@ -525,6 +531,9 @@ definitions:
         description: Liste des codes postaux associés à la commune
         items:
           type: string
+      siren:
+        type: string
+        description: Code SIREN de la commune
       codeEpci:
         type: string
         description: Code de l'EPCI associé à la commune
diff --git a/lib/communeHelpers.js b/lib/communeHelpers.js
index 75baac8..b8cbaaa 100644
--- a/lib/communeHelpers.js
+++ b/lib/communeHelpers.js
@@ -1,7 +1,7 @@
 const {initFields, initFormat} = require('./helpers')
 
 const initCommuneFields = initFields({
-  default: ['nom', 'code', 'codeDepartement', 'codeEpci', 'codeRegion', 'codesPostaux', 'population'],
+  default: ['nom', 'code', 'codeDepartement', 'siren', 'codeEpci', 'codeRegion', 'codesPostaux', 'population'],
   base: ['nom', 'code']
 })
 
diff --git a/lib/communes.js b/lib/communes.js
index fde03c4..dc82a1a 100644
--- a/lib/communes.js
+++ b/lib/communes.js
@@ -18,6 +18,7 @@ const schema = {
   type: {type: 'token', queryWith: 'type', multiple: 'OR'},
   code: {type: 'token', queryWith: 'code'},
   codesPostaux: {type: 'tokenList', queryWith: 'codePostal'},
+  siren: {type: 'token', queryWith: 'siren'},
   codeEpci: {type: 'token', queryWith: 'codeEpci'},
   codeDepartement: {type: 'token', queryWith: 'codeDepartement'},
   codeRegion: {type: 'token', queryWith: 'codeRegion'},
diff --git a/package.json b/package.json
index 8d13360..6f31608 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@etalab/api-geo",
-  "version": "2.1.0",
+  "version": "2.2.0",
   "description": "Interroger les référentiels géographiques plus facilement",
   "repository": {
     "type": "git",
@@ -20,7 +20,7 @@
     "rbush": "^2.0.1"
   },
   "devDependencies": {
-    "@etalab/decoupage-administratif": "^2.1.0",
+    "@etalab/decoupage-administratif": "^2.2.1",
     "@turf/area": "^6.0.1",
     "@turf/bbox": "^6.5.0",
     "@turf/bbox-polygon": "^6.5.0",
@@ -61,7 +61,8 @@
   },
   "contributors": [
     "Jérôme Desboeufs <jerome.desboeufs@data.gouv.fr>",
-    "Théophile Merlière <theophile.merliere@data.gouv.fr>"
+    "Théophile Merlière <theophile.merliere@data.gouv.fr>",
+    "Thomas Gratier <thomas.gratier@data.gouv.fr>"
   ],
   "license": "MIT"
 }
diff --git a/server.js b/server.js
index 4363ba4..020dd92 100644
--- a/server.js
+++ b/server.js
@@ -32,7 +32,7 @@ app.use((req, res, next) => {
 
 /* Communes */
 app.get('/communes', initLimit(), initCommuneFields, initCommuneFormat, (req, res) => {
-  const query = pick(req.query, 'type', 'code', 'codePostal', 'nom', 'codeEpci', 'codeDepartement', 'codeRegion', 'boost', 'zone')
+  const query = pick(req.query, 'type', 'code', 'codePostal', 'nom', 'siren', 'codeEpci', 'codeDepartement', 'codeRegion', 'boost', 'zone')
   if (req.query.lat && req.query.lon) {
     const lat = parseFloat(req.query.lat)
     const lon = parseFloat(req.query.lon)
diff --git a/test/communeHelpers.js b/test/communeHelpers.js
index c8798fb..491ea45 100644
--- a/test/communeHelpers.js
+++ b/test/communeHelpers.js
@@ -17,7 +17,7 @@ describe('communeHelpers', () => {
     it('empty request should return default fields', done => {
       runTestCase(
         {},
-        ['nom', 'code', 'codesPostaux', 'codeEpci', 'codeDepartement', 'codeRegion', 'population'],
+        ['nom', 'code', 'codesPostaux', 'codeEpci', 'codeDepartement', 'codeRegion', 'population', 'siren'],
         done
       )
     })
diff --git a/yarn.lock b/yarn.lock
index 866931c..8d65ba8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -90,10 +90,10 @@
     lodash "^4.17.11"
     to-fast-properties "^2.0.0"
 
-"@etalab/decoupage-administratif@^2.1.0":
-  version "2.1.0"
-  resolved "https://registry.npmjs.org/@etalab/decoupage-administratif/-/decoupage-administratif-2.1.0.tgz"
-  integrity sha512-ICOWiysBRNMd6HNY5yGFeia+AHqHLiXMrXDm4YPeEMPQP2i/vs38soCCFu8C789UT3o0efu79UK2hNTcHWBoXg==
+"@etalab/decoupage-administratif@^2.2.1":
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/@etalab/decoupage-administratif/-/decoupage-administratif-2.2.1.tgz#a33bb862b1ce28463a87b9ca235a44e5cfd2ca4d"
+  integrity sha512-W+m9W4GuIyi6nudnx2BNrLfkBv7DLNYq6KSTjnk49yPXMNLBRfvp8bLQuNDk6/jqvrPhMOOc0uRQhDu18UXQ8w==
 
 "@mrmlnc/readdir-enhanced@^2.2.1":
   version "2.2.1"