diff --git a/Gemfile.lock b/Gemfile.lock
index 2359ab2..41b2154 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,7 +7,7 @@ PATH
       json (~> 2.0)
       jwt
       phonelib (~> 0.6.29)
-      rails (~> 5.2)
+      rails (>= 5.2)
       strip_attributes
 
 GEM
@@ -127,14 +127,18 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.4)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.1)
     minitest (5.14.0)
     nio4r (2.5.2)
-    nokogiri (1.10.7)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.5)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     phonelib (0.6.41)
+    racc (1.5.2)
     rack (2.1.2)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)