diff --git a/Gemfile.lock b/Gemfile.lock
index 4e1d1aa..adcba4f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    github_changelog_generator (1.8.5)
+    github_changelog_generator (1.9.0)
       colorize (~> 0.7)
       github_api (~> 0.12)