diff --git a/Tests/AppTests/__Snapshots__/WebpageSnapshotTests/test_ValidateSPIManifest_show.1.html b/Tests/AppTests/__Snapshots__/WebpageSnapshotTests/test_ValidateSPIManifest_show.1.html
index 69d55ea72..27f4383d3 100644
--- a/Tests/AppTests/__Snapshots__/WebpageSnapshotTests/test_ValidateSPIManifest_show.1.html
+++ b/Tests/AppTests/__Snapshots__/WebpageSnapshotTests/test_ValidateSPIManifest_show.1.html
@@ -79,7 +79,7 @@ <h2 class="trimmed">Validate a Swift Package Index manifest</h2>
               <p>Enter the contents of a 
                 <code>.spi.yml</code> file for validation:
               </p>
-              <textarea name="manifest" autofocus rows="15">version: 1
+              <textarea name="manifest" autofocus rows="15" maxlength="1000">version: 1
 builder:
   configs:
     - documentation_targets: [Target1, Target2]</textarea>