diff --git a/contrib/bump-taler-version.mjs b/contrib/bump-taler-version.mjs
new file mode 100755
index 000000000..a51ed9ad6
--- /dev/null
+++ b/contrib/bump-taler-version.mjs
@@ -0,0 +1,80 @@
+#!/usr/bin/env node
+
+// Bump the package.json versions in Taler-related packagesin
+// this repository.
+// The version must be in one of the following formats:
+// - x.y.z
+// - x.y.z-dev.n
+
+import * as fs from "fs";
+
+let requestedVersion = process.argv[2];
+
+let dry = false;
+if (process.argv.includes("--dry")) {
+  dry = true;
+}
+
+let verMatched = false;
+let verMajor = 0;
+let verMinor = 0;
+let verPatch = 0;
+let verDev = undefined;
+
+// Parse the requested version
+const releaseVerRegex = /^(\d+)[.](\d+)[.](\d+)$/;
+const devVerRegex = /^(\d+)[.](\d+)[.](\d+)-dev[.](\d+)$/;
+
+const releaseMatch = requestedVersion.match(releaseVerRegex);
+if (releaseMatch) {
+  verMatched = true;
+  verMajor = releaseMatch[1];
+  verMinor = releaseMatch[2];
+  verPatch = releaseMatch[3];
+}
+
+if (!verMatched) {
+  const devMatch = requestedVersion.match(devVerRegex);
+  if (devMatch) {
+    verMatched = true;
+    verMajor = devMatch[1];
+    verMinor = devMatch[2];
+    verPatch = devMatch[3];
+    verDev = devMatch[4];
+  }
+}
+
+let packages = ["taler-util", "taler-wallet-core", "taler-harness", "taler-wallet-cli"];
+
+for (const pkg of packages) {
+  const p = `packages/${pkg}/package.json`;
+  const data = JSON.parse(fs.readFileSync(p));
+  console.log(p, data.version);
+  if (!dry) {
+    data.version = requestedVersion;
+    fs.writeFileSync(p, JSON.stringify(data));
+  }
+}
+
+
+{
+  const p = "packages/taler-wallet-webextension/manifest-common.json"
+  const data = JSON.parse(fs.readFileSync(p));
+  console.log("manifest version", data.version);
+  console.log("manifest version_name", data.version_name);
+  // In manifest.json, we transform x.y.z-dev.n info x.y.z.n.
+  // It's necessary because browsers only allow decimals and dots
+  // in that field.
+  let dottedVer = undefined;
+  if (verDev != null) {
+    dottedVer = `${verMajor}.${verMinor}.${verPatch}.${verDev}`;
+  } else {
+    dottedVer = `${verMajor}.${verMinor}.${verPatch}`;
+  }
+  console.log("new manifest version", dottedVer);
+  if (!dry) {
+    data.version = dottedVer;
+    data.version_name = requestedVersion;
+    fs.writeFileSync(p, JSON.stringify(data));
+  }
+}