diff --git a/Gemfile.lock b/Gemfile.lock
index f6e11f9..520cbe8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,7 +3,7 @@ PATH
   specs:
     ruby-openai (2.0.0)
       dotenv (>= 2.7.6, < 2.9.0)
-      httparty (>= 0.18.1, < 0.21.0)
+      httparty (>= 0.18.1, < 0.22.0)
 
 GEM
   remote: https://rubygems.org/
@@ -17,13 +17,11 @@ GEM
     diff-lcs (1.5.0)
     dotenv (2.8.1)
     hashdiff (1.0.1)
-    httparty (0.20.0)
-      mime-types (~> 3.0)
+    httparty (0.21.0)
+      mini_mime (>= 1.0.0)
       multi_xml (>= 0.5.2)
     json (2.6.2)
-    mime-types (3.4.1)
-      mime-types-data (~> 3.2015)
-    mime-types-data (3.2022.0105)
+    mini_mime (1.1.2)
     multi_xml (0.6.0)
     parallel (1.22.1)
     parser (3.1.2.1)
diff --git a/ruby-openai.gemspec b/ruby-openai.gemspec
index e25c203..f747909 100644
--- a/ruby-openai.gemspec
+++ b/ruby-openai.gemspec
@@ -26,5 +26,5 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_dependency "dotenv", ">= 2.7.6", "< 2.9.0"
-  spec.add_dependency "httparty", ">= 0.18.1", "< 0.21.0"
+  spec.add_dependency "httparty", ">= 0.18.1", "< 0.22.0"
 end