diff --git a/lib/manager/npm/lookup/range.js b/lib/manager/npm/lookup/range.js
index 796226788710110c891e1c4a597e456962fea7fe..e63de448e9e8ccf2596aac66c787cae5332d6b08 100644
--- a/lib/manager/npm/lookup/range.js
+++ b/lib/manager/npm/lookup/range.js
@@ -25,12 +25,12 @@ function getRangeStrategy(config) {
   }
   if (depType === 'devDependencies') {
     // Always pin devDependencies
-    logger.debug({ depName }, 'Pinning devDependency');
+    logger.debug({ dependency: depName }, 'Pinning devDependency');
     return 'pin';
   }
   if (depType === 'dependencies' && packageJsonType === 'app') {
     // Pin dependencies if we're pretty sure it's not a browser library
-    logger.debug('Pinning app dependency');
+    logger.debug({ dependency: depName }, 'Pinning app dependency');
     return 'pin';
   }
   if (depType === 'peerDependencies') {