diff --git a/web-ssh/Gemfile.lock b/web-ssh/Gemfile.lock
index 0ff9387..4f1cf1f 100644
--- a/web-ssh/Gemfile.lock
+++ b/web-ssh/Gemfile.lock
@@ -42,8 +42,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     archive-zip (0.11.0)
       io-like (~> 0.3.0)
     arel (9.0.0)
@@ -114,11 +114,11 @@ GEM
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
     pg (1.1.3)
-    public_suffix (3.0.3)
-    racc (1.5.2)
-    rack (2.2.3)
+    public_suffix (4.0.7)
     puma (4.3.8)
       nio4r (~> 2.0)
+    racc (1.5.2)
+    rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.2)