diff --git a/blacklight-spotlight.gemspec b/blacklight-spotlight.gemspec
index ccdc54bef..64ef06727 100644
--- a/blacklight-spotlight.gemspec
+++ b/blacklight-spotlight.gemspec
@@ -42,7 +42,7 @@ these collections.)
   s.add_dependency 'mini_magick'
   s.add_dependency 'nokogiri'
   s.add_dependency 'oauth2'
-  s.add_dependency 'openseadragon', '>= 0.8.0'
+  s.add_dependency 'openseadragon', '>= 0.8.0', '< 1'
   s.add_dependency 'ostruct', '!= 0.3.0', '!= 0.3.1', '!= 0.3.2'
   s.add_dependency 'paper_trail', '>= 11.0', '< 17'
   s.add_dependency 'rails', '>= 7.1', '< 9'