diff --git a/Gemfile.lock b/Gemfile.lock
index 364eaff..b0cc003 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,6 +2,8 @@ PATH
   remote: .
   specs:
     tikkie-api (2.0.0)
+      bigdecimal
+      logger
 
 GEM
   remote: https://rubygems.org/
@@ -9,6 +11,7 @@ GEM
     addressable (2.8.6)
       public_suffix (>= 2.0.2, < 6.0)
     ast (2.4.2)
+    bigdecimal (3.1.8)
     crack (0.4.5)
       rexml
     diff-lcs (1.5.0)
@@ -16,6 +19,7 @@ GEM
     json (2.7.1)
     jwt (2.7.1)
     language_server-protocol (3.17.0.3)
+    logger (1.6.2)
     parallel (1.24.0)
     parser (3.2.2.4)
       ast (~> 2.4.1)
diff --git a/tikkie-api.gemspec b/tikkie-api.gemspec
index 8817b6e..3341a31 100644
--- a/tikkie-api.gemspec
+++ b/tikkie-api.gemspec
@@ -31,4 +31,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rspec', '~> 3.0'
   spec.add_development_dependency 'timecop', '~> 0.9'
   spec.add_development_dependency 'webmock', '~> 3.18'
+
+  spec.add_dependency 'bigdecimal'
+  spec.add_dependency 'logger'
 end