diff --git a/Gemfile.lock b/Gemfile.lock
index d2cb03de638..39736e178c4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -479,8 +479,7 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
-    simpleidn (0.2.2)
-      unf (~> 0.1.4)
+    simpleidn (0.2.3)
     snaky_hash (2.0.1)
       hashie
       version_gem (~> 1.1, >= 1.1.1)