diff --git a/conf/conf.json b/conf/conf.json
new file mode 100644
index 0000000..6cdc651
--- /dev/null
+++ b/conf/conf.json
@@ -0,0 +1,5 @@
+{
+    "halApi":"https://api.archives-ouvertes.fr/search?",
+    "proxy":"https://proxyout.inist.fr:8080",
+    "max_retry":2
+}
\ No newline at end of file
diff --git a/index.js b/index.js
index 54096c1..9e097a2 100644
--- a/index.js
+++ b/index.js
@@ -3,7 +3,10 @@
 const fetch = require('node-fetch');
 const fs = require('graceful-fs');
 const xmlFormatter = require('xml-formatter');
+const HttpsProxyAgent = require('https-proxy-agent');
+
 const utils = require('./lib/utils.js');
+const config = require('./conf/conf.json');
 
 const business = {};
 
@@ -66,8 +69,16 @@
  */
 function requestByQuery (docObject, query, cursorMark, retryCount, cb) {
   const target = cursorMark ? utils.getScrollUrl(query, cursorMark) : query.href;
+  const fetchOpts = {
+    headers: {
+      'Content-Type': 'application/json'
+    }
+  };
+  if (config.proxy !== '') {
+    fetchOpts.headers.agent = new HttpsProxyAgent(config.proxy);
+  }
   return fetch(target, {
-    headers: { 'Content-Type': 'application/json' }
+    fetchOpts
   }).then((res) => res.json()).then(async function (res) {
     const nextCursorMark = res.nextCursorMark;
     const docs = res.response.docs;
@@ -114,7 +125,7 @@
       requestByQuery(docObject, query, nextCursorMark, 0, cb);
     }
   }).catch(function (err) {
-    if (retryCount < 2) {
+    if (retryCount < config.max_retry) {
       retryCount++;
       requestByQuery(docObject, query, cursorMark, retryCount, cb);
     } else {
diff --git a/lib/utils.js b/lib/utils.js
index c4277f1..b419668 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -2,6 +2,7 @@
 
 const { URLSearchParams } = require('url');
 const query = require('../conf/query.json');
+const config = require('../conf/conf.json');
 const utils = {};
 
 /**
@@ -15,7 +16,7 @@
     sort: query.sort,
     cursorMark: query.cursorMark
   };
-  const url = new URL('http://api.archives-ouvertes.fr/search?' + new URLSearchParams(newQuery).toString());
+  const url = new URL(config.halApi + new URLSearchParams(newQuery).toString());
   query.fq.forEach(fq => {
     url.searchParams.append('fq', fq);
   });
diff --git a/package.json b/package.json
index c01f4b2..47b1085 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
   "dependencies": {
     "chai": "^3.4.0",
     "graceful-fs": "^4.2.8",
+    "https-proxy-agent": "^5.0.0",
     "mocha": "^2.3.3"
   },
   "devDependencies": {