diff --git a/lib/extension/otaUpdate.js b/lib/extension/otaUpdate.js
index e4c7c477..54fec1c6 100644
--- a/lib/extension/otaUpdate.js
+++ b/lib/extension/otaUpdate.js
@@ -119,6 +119,7 @@ class OTAUpdate extends Extension {
         const type = topic.substring(topic.lastIndexOf('/') + 1);
         const responseData = {id: ID};
         let error = null;
+        let errorStack = null;
 
         if (!resolvedEntity || resolvedEntity.type !== 'device') {
             error = `Device '${ID}' does not exist`;
@@ -173,6 +174,7 @@ class OTAUpdate extends Extension {
                     responseData.updateAvailable = available;
                 } catch (e) {
                     error = `Failed to check if update available for '${resolvedEntity.name}' (${e.message})`;
+                    errorStack = e.stack;
 
                     /* istanbul ignore else */
                     if (settings.get().advanced.legacy_api) {
@@ -237,6 +239,7 @@ class OTAUpdate extends Extension {
                 } catch (e) {
                     logger.debug(`Update of '${resolvedEntity.name}' failed (${e})`);
                     error = `Update of '${resolvedEntity.name}' failed (${e.message})`;
+                    errorStack = e.stack;
 
                     this.removeProgressAndRemainingFromState(resolvedEntity.device);
                     const payload = this.getEntityPublishPayload('available');
@@ -261,6 +264,7 @@ class OTAUpdate extends Extension {
 
         if (error) {
             logger.error(error);
+            errorStack && logger.debug(errorStack);
         }
     }
 }