diff --git a/src/comment/Gemfile.lock b/src/comment/Gemfile.lock
index 639c2cf..5e77a8e 100644
--- a/src/comment/Gemfile.lock
+++ b/src/comment/Gemfile.lock
@@ -8,9 +8,11 @@ GEM
     mongo (2.4.3)
       bson (>= 4.2.1, < 5.0.0)
     mustermann (1.0.2)
+    nio4r (2.5.8)
     prometheus-client (0.7.1)
       quantile (~> 0.2.0)
-    puma (3.10.0)
+    puma (4.3.12)
+      nio4r (~> 2.0)
     quantile (0.2.0)
     rack (2.0.5)
     rack-protection (2.0.2)