diff --git a/Gemfile b/Gemfile
index b8d2b4c38..f70ee3ac7 100644
--- a/Gemfile
+++ b/Gemfile
@@ -21,7 +21,7 @@ gem 'pg',                        '1.4.2'
 # 1.8 is for Rails < 5.0
 gem 'ransack', '~> 2.6.0'
 gem 'truemail', '~> 2.4' # validates email by regexp, mail server existence and address existence
-gem 'validates_email_format_of', '1.6.3' # validates email against RFC 2822 and RFC 3696
+gem 'validates_email_format_of', '1.7.1' # validates email against RFC 2822 and RFC 3696
 
 # 0.7.3 is the latest for Rails 4.2, however, it is absent on Rubygems server
 # https://github.com/huacnlee/rails-settings-cached/issues/165
diff --git a/Gemfile.lock b/Gemfile.lock
index 0ba400459..2a3f51be9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -259,7 +259,7 @@ GEM
     httpi (2.4.5)
       rack
       socksify
-    i18n (1.10.0)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
     i18n_data (0.13.0)
     isikukood (0.1.2)
@@ -499,7 +499,7 @@ GEM
     validate_url (1.0.15)
       activemodel (>= 3.0.0)
       public_suffix
-    validates_email_format_of (1.6.3)
+    validates_email_format_of (1.7.1)
       i18n
     warden (1.2.9)
       rack (>= 2.0.9)
@@ -596,7 +596,7 @@ DEPENDENCIES
   spy
   truemail (~> 2.4)
   uglifier
-  validates_email_format_of (= 1.6.3)
+  validates_email_format_of (= 1.7.1)
   webdrivers
   webmock
   whenever (= 1.0.0)