diff --git a/CHANGELOG.md b/CHANGELOG.md
index a53dc0eb0..086cfa165 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ and releases in Jupiter project adheres to [Semantic Versioning](http://semver.o
 
 ### Added
 - Ruby 2.5 to travis ci testing matrix [PR#1040](https://github.com/ualbertalib/jupiter/pull/1040)
+- Added configuration for active storage to allow tifs to have a thumbnail [#991](https://github.com/ualbertalib/jupiter/issues/991)
 - Added missing contoller tests [#865](https://github.com/ualbertalib/jupiter/issues/865)
 
 ### Changed
diff --git a/config/initializers/active_storage.rb b/config/initializers/active_storage.rb
index 861bc4cc5..b57249b31 100644
--- a/config/initializers/active_storage.rb
+++ b/config/initializers/active_storage.rb
@@ -11,3 +11,7 @@ def self.find_signed(id)
     end
   end
 end
+
+# Allow tiff as a variable content type and inline to make them available as thumbnails, both lines can likely be removed after upgrading to Rails 6.
+Rails.application.config.active_storage.variable_content_types.push 'image/tiff'
+Rails.application.config.active_storage.content_types_allowed_inline.push 'image/tiff'