diff --git a/gemspec.yml b/gemspec.yml
index ea8ad88..ddb5a25 100644
--- a/gemspec.yml
+++ b/gemspec.yml
@@ -16,9 +16,6 @@ metadata:
   bug_tracker_uri:   https://github.com/postmodern/digest-crc/issues
   changelog_uri:     https://github.com/postmodern/digest-crc/blob/master/ChangeLog.md
 
-extensions:
- - ext/digest/Rakefile
-
 has_yard: true
 
 dependencies: