diff --git a/Gemfile b/Gemfile
index 99c83da..cbd70a7 100644
--- a/Gemfile
+++ b/Gemfile
@@ -76,7 +76,7 @@ gem "omniauth-google-oauth2"
 # OAuth
 gem 'omniauth-oauth2', '~> 1.3.1'
 # REST calls to Microsoft Graph
-gem 'httparty', '~> 0.17.1'
+gem 'httparty', '~> 0.21.0'
 gem 'one_drive'
 # ..
 gem 'therubyracer', platforms: :ruby
diff --git a/Gemfile.lock b/Gemfile.lock
index 261bb14..43b47c0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -153,8 +153,8 @@ GEM
     globalid (0.4.2)
       activesupport (>= 4.2.0)
     hashie (4.1.0)
-    httparty (0.17.3)
-      mime-types (~> 3.0)
+    httparty (0.21.0)
+      mini_mime (>= 1.0.0)
       multi_xml (>= 0.5.2)
     httpclient (2.8.3)
     i18n (1.8.10)
@@ -198,9 +198,9 @@ GEM
       mini_mime (>= 0.1.1)
     marcel (1.0.1)
     method_source (1.0.0)
-    mime-types (3.3.1)
+    mime-types (3.4.1)
       mime-types-data (~> 3.2015)
-    mime-types-data (3.2021.0225)
+    mime-types-data (3.2022.0105)
     mini_magick (4.11.0)
     mini_mime (1.1.0)
     minitest (5.14.4)
@@ -415,7 +415,7 @@ DEPENDENCIES
   execjs
   figaro
   file_validators
-  httparty (~> 0.17.1)
+  httparty (~> 0.21.0)
   jSignature
   jbuilder (~> 2.5)
   jquery-datatables-rails