diff --git a/Gemfile.lock b/Gemfile.lock
index 3a14e41..a631b93 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -123,7 +123,7 @@ GEM
       yard (~> 0.8)
     pry-rails (0.3.4)
       pry (>= 0.9.10)
-    puma (3.4.0)
+    puma (3.12.6)
     rack (1.6.4)
     rack-cors (0.4.0)
     rack-test (0.6.3)