diff --git a/Gemfile.lock b/Gemfile.lock
index 3bc0ef5..c299195 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,13 +11,13 @@ GEM
     mustermann (1.0.3)
     nest (3.1.2)
       redic
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     ohm (3.1.1)
       nest (~> 3)
       redic (~> 1.5.0)
       stal
     pg (1.1.4)
-    puma (4.3.3)
+    puma (4.3.12)
       nio4r (~> 2.0)
     rack (2.2.2)
     rack-cors (1.0.5)