diff --git a/lib/workers/pr/changelog/source-github.js b/lib/workers/pr/changelog/source-github.js
index 23fc1a8996e52d4c8d27da516fa424c0e6be77b1..22017e5d7530ff3bf0f37e12962492b3b4169de1 100644
--- a/lib/workers/pr/changelog/source-github.js
+++ b/lib/workers/pr/changelog/source-github.js
@@ -144,7 +144,7 @@ async function getChangeLogJSON({
         const cacheMinutes = 30;
         await renovateCache.set(
           cacheNamespace,
-          getCacheKey(next.version),
+          getCacheKey(prev.version, next.version),
           release,
           cacheMinutes
         );