diff --git a/Gemfile.lock b/Gemfile.lock
index f62f359..d7bb5a7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -142,8 +142,10 @@ GEM
     pg (1.1.4-x64-mingw32)
     pg (1.1.4-x86-mingw32)
     public_suffix (3.0.3)
-    puma (3.12.2)
-    puma (3.12.2-java)
+    puma (4.3.12)
+      nio4r (~> 2.0)
+    puma (4.3.12-java)
+      nio4r (~> 2.0)
     racc (1.5.2)
     racc (1.5.2-java)
     rack (2.2.3)
@@ -233,7 +235,7 @@ GEM
     turbolinks (5.2.0)
       turbolinks-source (~> 5.2)
     turbolinks-source (5.2.0)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     tzinfo-data (1.2019.3)
       tzinfo (>= 1.0.0)