diff --git a/Gemfile.lock b/Gemfile.lock
index a65f2bc3..327a3b75 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    briard (2.2.1)
+    briard (2.2.2)
       activesupport (>= 4.2.5)
       benchmark_methods (~> 0.7)
       bibtex-ruby (>= 5.1.0)
diff --git a/lib/briard/version.rb b/lib/briard/version.rb
index 3d251c88..daf5ac1e 100644
--- a/lib/briard/version.rb
+++ b/lib/briard/version.rb
@@ -1,3 +1,3 @@
 module Briard
-  VERSION = "2.2.1"
+  VERSION = "2.2.2"
 end
diff --git a/lib/briard/writers/cff_writer.rb b/lib/briard/writers/cff_writer.rb
index ed151355..09605dba 100644
--- a/lib/briard/writers/cff_writer.rb
+++ b/lib/briard/writers/cff_writer.rb
@@ -7,7 +7,7 @@ def cff
         return nil unless valid? || show_errors
 
         # only use CFF for software
-        return nil unless types["resourceTypeGeneral"] == "Software"
+        return nil unless %w(Software Collection).include?(types["resourceTypeGeneral"])
 
         title = parse_attributes(titles, content: "title", first: true)