diff --git a/Gemfile.lock b/Gemfile.lock
index e7ce4303f..49ac618c1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,7 +15,7 @@ PATH
       rails (~> 5.0.2)
       sass-rails
       sassc (~> 2.1.0)
-      simple_form (~> 3.3.0)
+      simple_form (>= 5.0.2)
       term-ansicolor
       underscore-rails (~> 1.4)
       will_paginate (~> 3.0.0)
@@ -188,7 +188,7 @@ GEM
     mimemagic (0.3.10)
       nokogiri (~> 1)
       rake
-    mini_mime (1.1.1)
+    mini_mime (1.1.2)
     mini_portile2 (2.6.1)
     minitest (5.14.4)
     minitest-rails (3.0.0)
@@ -280,9 +280,9 @@ GEM
       tilt (>= 1.1, < 3)
     sassc (2.1.0)
       ffi (~> 1.9)
-    simple_form (3.3.1)
-      actionpack (> 4, < 5.1)
-      activemodel (> 4, < 5.1)
+    simple_form (5.0.3)
+      actionpack (>= 5.0)
+      activemodel (>= 5.0)
     single_test (0.6.0)
       rake
     slop (3.6.0)
diff --git a/browsercms.gemspec b/browsercms.gemspec
index ffe8fd24f..b040cfbcc 100644
--- a/browsercms.gemspec
+++ b/browsercms.gemspec
@@ -45,7 +45,7 @@ Gem::Specification.new do |s|
   s.add_dependency("panoramic")
   s.add_dependency("will_paginate", "~>3.0.0")
   s.add_dependency("actionpack-page_caching", "~>1.0")
-  s.add_dependency("simple_form", "~>3.3.0")
+  s.add_dependency("simple_form", ">= 5.0.2")
 
   # Required only for bcms-upgrade
   s.add_dependency "term-ansicolor"