diff --git a/fasp_base/Gemfile.lock b/fasp_base/Gemfile.lock
index 38ef5ec..4fd5706 100644
--- a/fasp_base/Gemfile.lock
+++ b/fasp_base/Gemfile.lock
@@ -170,7 +170,7 @@ GEM
       date
       stringio
     public_suffix (6.0.1)
-    puma (6.5.0)
+    puma (6.6.0)
       nio4r (~> 2.0)
     racc (1.8.1)
     rack (3.1.8)