diff --git a/Gemfile b/Gemfile
index 730317b..47bda22 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,7 +11,7 @@ gem 'graphql'
 gem 'jwt'
 gem 'lograge'
 gem 'mitlibraries-theme', git: 'https://github.com/mitlibraries/mitlibraries-theme', tag: 'v1.0.2'
-gem 'opensearch-ruby', '~> 2.1'
+gem 'opensearch-ruby', '~> 3.0'
 gem 'puma'
 gem 'rack-attack'
 gem 'rack-cors'
diff --git a/Gemfile.lock b/Gemfile.lock
index 5349021..682340f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -219,14 +219,9 @@ GEM
     nokogiri (1.15.4)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
-    opensearch-api (2.2.0)
-      multi_json
-    opensearch-ruby (2.1.0)
-      opensearch-api (~> 2.1)
-      opensearch-transport (~> 2.0)
-    opensearch-transport (2.1.0)
+    opensearch-ruby (3.0.1)
       faraday (>= 1.0, < 3)
-      multi_json
+      multi_json (>= 1.0)
     orm_adapter (0.5.0)
     parallel (1.23.0)
     parser (3.2.2.3)
@@ -404,7 +399,7 @@ DEPENDENCIES
   listen
   lograge
   mitlibraries-theme!
-  opensearch-ruby (~> 2.1)
+  opensearch-ruby (~> 3.0)
   pg
   puma
   rack-attack