diff --git a/Gemfile b/Gemfile
index 0ba3302..2b023b6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 source "https://rubygems.org"
 
-gem 'git', '~> 1.3'
+gem 'git', '~> 1.13'
 gem 'sinatra', '~> 2.0', '>= 2.0.4'
 gem 'minitest', '~> 5.11', '>= 5.11.3'
 gem 'multi_json', '~> 1.13', '>= 1.13.1'
diff --git a/Gemfile.lock b/Gemfile.lock
index eff6f10..ed5d8f6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,11 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    git (1.4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
+    git (1.13.0)
+      addressable (~> 2.8)
+      rchardet (~> 1.8)
     gitlab (4.4.0)
       httparty (>= 0.14.0)
       terminal-table (>= 1.5.1)
@@ -15,9 +19,11 @@ GEM
     multi_xml (0.6.0)
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
+    public_suffix (4.0.7)
     rack (2.2.3)
     rack-protection (2.0.8.1)
       rack
+    rchardet (1.8.0)
     ruby2_keywords (0.0.2)
     sinatra (2.0.8.1)
       mustermann (~> 1.0)
@@ -33,7 +39,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  git (~> 1.3)
+  git (~> 1.13)
   gitlab (~> 4.4)
   mail (~> 2.7)
   minitest (~> 5.11, >= 5.11.3)