diff --git a/Gemfile.lock b/Gemfile.lock
index 9f97776..04573eb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -20,19 +20,19 @@ GEM
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
     diff-lcs (1.3)
-    faraday (0.15.3)
+    faraday (0.17.4)
       multipart-post (>= 1.2, < 3)
     hashdiff (0.3.4)
     i18n (0.8.0)
-    jwt (2.1.0)
+    jwt (2.2.2)
     method_source (0.8.2)
     minitest (5.10.1)
-    multi_json (1.13.1)
+    multi_json (1.15.0)
     multi_xml (0.6.0)
-    multipart-post (2.0.0)
+    multipart-post (2.1.1)
     mustermann (1.0.2)
-    oauth2 (1.4.1)
-      faraday (>= 0.8, < 0.16.0)
+    oauth2 (1.4.7)
+      faraday (>= 0.8, < 2.0)
       jwt (>= 1.0, < 3.0)
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
@@ -42,7 +42,7 @@ GEM
       method_source (~> 0.8.1)
       slop (~> 3.4)
     public_suffix (2.0.5)
-    rack (2.0.6)
+    rack (2.1.4)
     rack-protection (2.0.2)
       rack
     rake (11.2.2)