Fix version verify.

.travis.yml

@@ -24,4 +24,5 @@ script:
   # enable experimental features.
   - echo $TRAVIS_DIST
   - echo $ARCH_VERS
-  - .deploy/docker/build-$ARCH.sh
+  - .deploy/docker/build-$ARCH.sh
+  - docker build -t jc5x/firefly-iii:develop-arm64 -f Dockerfile.arm64 .

app/Services/FireflyIIIOrg/Update/UpdateRequest.php

@@ -61,10 +61,10 @@ class UpdateRequest implements UpdateRequestInterface
             throw new FireflyException('Invalid JSON in server response.');
         }
 
-        if (!isset($json[$channel])) {
+        if (!isset($json['firefly_iii'][$channel])) {
             throw new FireflyException(sprintf('Unknown update channel "%s"', $channel));
         }
 
-        return $json[$channel];
+        return $json['firefly_iii'][$channel];
     }
 }