diff --git a/lib/datasource/github.js b/lib/datasource/github.js
index f299c06083715fb0ff8133ca0b904105da9cc62c..edef25e76daa073a803da63653811d8aac827277 100644
--- a/lib/datasource/github.js
+++ b/lib/datasource/github.js
@@ -31,7 +31,7 @@ async function getDependency(repo, options = {}) {
   if (!versions) {
     return null;
   }
-  versions = versions.filter(isPinnedVersion);
+  versions = versions.filter(version => isPinnedVersion(version));
   if (clean) {
     versions = versions.map(version => version.replace(/^v/, ''));
   }