diff --git a/Gemfile b/Gemfile
index 7df5ce4..1ecdd6a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,6 @@
 source "http://rubygems.org"
 
-gem 'activesupport', '~> 4.0'
+gem 'activesupport', '~> 5.2', '>= 5.2.4.3'
 gem 'faraday', '~> 0.9.2'
 
 # Add dependencies to develop your gem here.
diff --git a/Gemfile.lock b/Gemfile.lock
index 2aedcb5..5b0f998 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,10 +1,10 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    activesupport (4.2.9)
-      i18n (~> 0.7)
+    activesupport (5.2.4.3)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 0.7, < 2)
       minitest (~> 5.1)
-      thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
     addressable (2.4.0)
     builder (3.2.3)
@@ -12,6 +12,7 @@ GEM
     codeclimate-test-reporter (1.0.8)
       simplecov (<= 0.13)
     coderay (1.1.1)
+    concurrent-ruby (1.1.6)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
     descendants_tracker (0.0.4)
@@ -31,7 +32,8 @@ GEM
     hashdiff (0.3.6)
     hashie (3.5.6)
     highline (1.7.8)
-    i18n (0.8.6)
+    i18n (1.8.2)
+      concurrent-ruby (~> 1.0)
     jeweler (2.0.1)
       builder
       bundler (>= 1.0)
@@ -46,7 +48,7 @@ GEM
     method_source (0.8.2)
     mime-types (2.99.3)
     mini_portile2 (2.2.0)
-    minitest (5.10.3)
+    minitest (5.14.1)
     multi_json (1.12.1)
     multi_xml (0.6.0)
     multipart-post (2.0.0)
@@ -90,7 +92,7 @@ GEM
     slop (3.6.0)
     thread_safe (0.3.6)
     timecop (0.9.1)
-    tzinfo (1.2.3)
+    tzinfo (1.2.7)
       thread_safe (~> 0.1)
     webmock (3.0.1)
       addressable (>= 2.3.6)
@@ -101,7 +103,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  activesupport (~> 4.0)
+  activesupport (~> 5.2, >= 5.2.4.3)
   bundler
   codeclimate-test-reporter
   faraday (~> 0.9.2)
@@ -114,4 +116,4 @@ DEPENDENCIES
   webmock
 
 BUNDLED WITH
-   1.14.6
+   1.17.3
diff --git a/leadsquared.gemspec b/leadsquared.gemspec
index a32e94f..2eed229 100644
--- a/leadsquared.gemspec
+++ b/leadsquared.gemspec
@@ -52,7 +52,7 @@ Gem::Specification.new do |s|
     s.specification_version = 4
 
     if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
-      s.add_runtime_dependency(%q<activesupport>.freeze, ["~> 4.0"])
+      s.add_runtime_dependency(%q<activesupport>.freeze, ["5.2.4.3"])
       s.add_runtime_dependency(%q<faraday>.freeze, ["~> 0.9.2"])
       s.add_development_dependency(%q<rspec>.freeze, [">= 0"])
       s.add_development_dependency(%q<rdoc>.freeze, [">= 0"])
@@ -64,7 +64,7 @@ Gem::Specification.new do |s|
       s.add_development_dependency(%q<timecop>.freeze, [">= 0"])
       s.add_development_dependency(%q<codeclimate-test-reporter>.freeze, [">= 0"])
     else
-      s.add_dependency(%q<activesupport>.freeze, ["~> 4.0"])
+      s.add_dependency(%q<activesupport>.freeze, ["5.2.4.3"])
       s.add_dependency(%q<faraday>.freeze, ["~> 0.9.2"])
       s.add_dependency(%q<rspec>.freeze, [">= 0"])
       s.add_dependency(%q<rdoc>.freeze, [">= 0"])
@@ -77,7 +77,7 @@ Gem::Specification.new do |s|
       s.add_dependency(%q<codeclimate-test-reporter>.freeze, [">= 0"])
     end
   else
-    s.add_dependency(%q<activesupport>.freeze, ["~> 4.0"])
+    s.add_dependency(%q<activesupport>.freeze, ["5.2.4.3"])
     s.add_dependency(%q<faraday>.freeze, ["~> 0.9.2"])
     s.add_dependency(%q<rspec>.freeze, [">= 0"])
     s.add_dependency(%q<rdoc>.freeze, [">= 0"])