diff --git a/fasp_base/Gemfile.lock b/fasp_base/Gemfile.lock
index a854025..fe8459d 100644
--- a/fasp_base/Gemfile.lock
+++ b/fasp_base/Gemfile.lock
@@ -89,7 +89,7 @@ GEM
       public_suffix (>= 2.0.2, < 7.0)
     ast (2.4.3)
     base64 (0.3.0)
-    bcrypt (3.1.20)
+    bcrypt (3.1.21)
     bigdecimal (3.3.1)
     builder (3.3.0)
     cgi (0.4.2)