diff --git a/.npmrc b/.npmrc
new file mode 100644
index 0000000..ae64359
--- /dev/null
+++ b/.npmrc
@@ -0,0 +1 @@
+//registry.npmjs.org/:_authToken=${NPM_TOKEN}
diff --git a/package.json b/package.json
index db9aae2..beaffa9 100644
--- a/package.json
+++ b/package.json
@@ -39,5 +39,8 @@
   "bugs": {
     "url": "https://github.com/LePetitBloc/wallets/issues"
   },
-  "homepage": "https://github.com/LePetitBloc/wallets#readme"
+  "homepage": "https://github.com/LePetitBloc/wallets#readme",
+  "dependencies": {
+    "dotenv": "^6.0.0"
+  }
 }
diff --git a/updater.js b/updater.js
new file mode 100644
index 0000000..5602e69
--- /dev/null
+++ b/updater.js
@@ -0,0 +1,233 @@
+require("dotenv").config();
+const util = require("util");
+const exec = util.promisify(require("child_process").exec);
+const versionNumberRegexp = /([vV])?([0-9]{1,2})\.([0-9]{1,2})(?:\.([0-9]{1,2}))?(?:\.([0-9]{1,2}))?[\n|\s]?/g;
+const wallets = require("./wallets");
+const writeFile = util.promisify(require("fs").writeFile);
+const manifest = require("./package");
+
+class Version {
+  constructor(versionRegexpResult) {
+    this.prefix = versionRegexpResult[1] || "";
+    this.major = parseInt(versionRegexpResult[2]);
+    this.minor = parseInt(versionRegexpResult[3]);
+    this.patch = versionRegexpResult[4] ? parseInt(versionRegexpResult[4]) : null;
+    this.fourth = versionRegexpResult[5] ? parseInt(versionRegexpResult[5]) : null;
+  }
+
+  static fromVersionString(versionString) {
+    if (typeof versionString === "string") {
+      versionNumberRegexp.lastIndex = 0;
+      let regexpResult = versionNumberRegexp.exec(versionString);
+      if (regexpResult) {
+        return new Version(regexpResult);
+      }
+    }
+
+    throw new Error("Can't parse version string : syntax error");
+  }
+
+  toString() {
+    let string = this.prefix + this.major + "." + this.minor;
+    string += this.patch !== null ? "." + this.patch : "";
+    string += this.fourth !== null ? "." + this.fourth : "";
+    return string;
+  }
+}
+
+class Update {
+  constructor(walletIdentifier, from, to) {
+    this.walletIdentifier = walletIdentifier;
+    this.from = from;
+    this.to = to;
+  }
+
+  toString() {
+    return "updated " + this.walletIdentifier + " from " + this.from.toString() + " to " + this.to.toString();
+  }
+}
+
+(async function() {
+  try {
+    console.log("--- Wallet updater launched at " + new Date() + "--");
+    let updates = await checkAllForUpdates();
+
+    if (updates.filter(o => { return o !== null; }).length > 0) {
+      await updateFile(updates);
+      await updatePatchNumber();
+
+      const commitMessage = buildCommitMessage(updates);
+
+      await addDeployKey();
+      await addChanges();
+      await commit(commitMessage);
+      await tag(commitMessage);
+      await push();
+      await publish();
+    } else {
+      console.log("Wallets are up to date.");
+    }
+
+    console.log("--- Wallet updater ended at " + new Date() + "--");
+  } catch (e) {
+    console.error(e);
+  }
+})();
+
+
+async function addDeployKey() {
+  if (!process.env.deploy_key) {
+    throw new Error("Environment variable deploy_key is not set - cannot send modifications to server.");
+  }
+  const { stdout, stderr } = await exec("eval \"$(ssh-agent -s)\" && echo $deploy_key | ssh-add -");
+  console.log(stdout);
+  console.log(stderr);
+}
+
+async function addChanges() {
+  const { stdout } = await exec("git add wallets.json package.json");
+  console.log(stdout);
+}
+
+async function commit(message) {
+  const { stdout } = await exec("git commit -m \"" + message + "\"");
+  console.log(stdout);
+}
+
+async function tag(message) {
+  const { stdout } = await exec("git tag " + manifest.version + " -m \" " + message + "\"");
+  console.log(stdout);
+}
+
+async function push() {
+  const { stderr } = await exec("git push --follow-tags origin HEAD");
+  console.log(stderr);
+  console.log("Updated wallet.json successfully");
+}
+
+function buildCommitMessage(updates) {
+  let commitMessage = "Update wallet.json\n\n";
+  updates.forEach(update => {
+    if (update) {
+      commitMessage += update.toString() + "\n";
+    }
+  });
+  return commitMessage;
+}
+
+async function updateFile(updates) {
+  updates.forEach(update => {
+    if (update) {
+      wallets[update.walletIdentifier].tag = update.to.toString();
+    }
+  });
+  return writeFile("./wallets.json", JSON.stringify(wallets, null, "  "));
+}
+
+async function checkAllForUpdates() {
+  const pendingUpdates = [];
+  for (let property in wallets) {
+    if (wallets.hasOwnProperty(property)) {
+      pendingUpdates.push(checkForUpdates(wallets[property], property));
+    }
+  }
+  return Promise.all(pendingUpdates);
+}
+
+async function checkForUpdates(wallet, identifier) {
+  const tags = await listRemoteTags(wallet.repository);
+  let versions = parseVersionsTags(tags);
+  const currentVersion = findCurrentVersion(wallet, identifier);
+  if (currentVersion) {
+    versions = versions.filter(superiorVersionsFilter(currentVersion));
+    versions = versions.sort(versionsSorter);
+
+    if (versions.length > 0) {
+      const targetVersion = versions[versions.length - 1];
+      return new Update(identifier, currentVersion, targetVersion);
+    }
+  }
+  return null;
+}
+
+function findCurrentVersion(wallet, identifier) {
+  try {
+    return Version.fromVersionString(wallet.tag);
+  }catch (e) {
+    console.warn("Can't determined current version for wallet : " + identifier + " missing tag");
+    return null;
+  }
+}
+
+async function publish() {
+  if (!process.env.NPM_TOKEN) {
+    throw new Error("Environment variable NPM_TOKEN is not set - cannot publish package.");
+  }
+  try {
+    await exec("npm whoami");
+  } catch (e) {
+    throw new Error("Something went wrong authenticating you on npm - Check your NPM_TOKEN validity");
+  }
+
+  const { stdout } = await exec("npm publish");
+  console.log(stdout);
+  return stdout;
+}
+
+async function updatePatchNumber() {
+  const currentVersion = Version.fromVersionString(manifest.version);
+  currentVersion.patch += 1;
+
+  manifest.version = currentVersion.toString();
+  return writeFile("./package.json", JSON.stringify(manifest, null, "  "));
+}
+
+
+function superiorVersionsFilter(currentVersion) {
+  return version => {
+    if (version.major === currentVersion.major) {
+      if (version.minor > currentVersion.minor) {
+        return 1;
+      } else if (version.minor === currentVersion.minor) {
+        if (version.patch > currentVersion.patch) {
+          return 1;
+        } else if (version.patch === currentVersion.patch) {
+          if (version.fourth > currentVersion.fourth) {
+            return 1;
+          }
+        }
+      }
+    }
+    return 0;
+  };
+}
+
+function versionsSorter(a, b) {
+  if (
+    a.major > b.major ||
+    (a.major >= b.major && a.minor > b.minor) ||
+    (a.major >= b.major && a.minor >= b.minor && a.patch > b.patch) ||
+    (a.major >= b.major && a.minor >= b.minor && a.patch >= b.patch && a.fourth > b.fourth)
+  ) {
+    return 1;
+  } else {
+    return -1;
+  }
+}
+
+function parseVersionsTags(tagLists) {
+  const versions = [];
+  let version = {};
+  versionNumberRegexp.lastIndex = 0;
+  while ((version = versionNumberRegexp.exec(tagLists))) {
+    versions.push(new Version(version));
+  }
+  return versions;
+}
+
+async function listRemoteTags(remote) {
+  const { stdout } = await exec("git ls-remote --tags " + remote);
+  return stdout;
+}
+
+