diff --git a/index.js b/index.js
index f109988..48b36d6 100644
--- a/index.js
+++ b/index.js
@@ -162,6 +162,15 @@ module.exports = function (packageFile, opt) {
 		return through.obj(streamProcess, streamEnd);
 	};
 
+	var getDetails = function(body) {
+		try {
+			return JSON.parse(body).detail;
+		} catch(e) {
+			// Prevent any problems in the case of response format changing.
+			return body;
+		}
+	};
+
 	/***************************************************************************
 	*  Delete a version
 	***************************************************************************/
@@ -182,6 +191,14 @@ module.exports = function (packageFile, opt) {
 					gutil.log(err);
 				}
 
+				if (res.statusCode === 400 || res.statusCode === 401) {
+					throw new PluginError(
+						'gulp-sentry-release.deleteVersion(version)',
+						'Server return error ' + res.statusCode +': ' + getDetails(body)
+					);
+				}
+
+
 				if (res.statusCode === 404) {
 					throw new PluginError(
 						'gulp-sentry-release.deleteVersion(version)',