diff --git a/contract-tests/Gemfile b/contract-tests/Gemfile
index 5bf3d7c4..e70f6008 100644
--- a/contract-tests/Gemfile
+++ b/contract-tests/Gemfile
@@ -2,7 +2,7 @@ source 'https://rubygems.org'
 
 gem 'launchdarkly-server-sdk', path: '..'
 
-gem 'http', '~> 5.1'
+gem 'http', '>= 5.1', '< 7.0'
 gem 'json'
 gem "puma", "~> 6.6"
 gem "rackup", "~> 2.2"
diff --git a/launchdarkly-server-sdk.gemspec b/launchdarkly-server-sdk.gemspec
index 0bed3f26..25ba2f96 100644
--- a/launchdarkly-server-sdk.gemspec
+++ b/launchdarkly-server-sdk.gemspec
@@ -42,7 +42,7 @@ Gem::Specification.new do |spec|
 
   spec.add_runtime_dependency "benchmark", "~> 0.1", ">= 0.1.1"
   spec.add_runtime_dependency "concurrent-ruby", "~> 1.1"
-  spec.add_runtime_dependency "ld-eventsource", "2.5.1"
+  spec.add_runtime_dependency "ld-eventsource", "2.6.0"
   spec.add_runtime_dependency "observer", "~> 0.1.2"
   spec.add_runtime_dependency "openssl", ">= 3.1.2", "< 5.0"
   spec.add_runtime_dependency "semantic", "~> 1.6"
@@ -50,6 +50,6 @@ Gem::Specification.new do |spec|
   # Please keep ld-eventsource dependency as an exact version so that bugfixes to
   # that LD library are always associated with a new SDK version.
 
-  spec.add_runtime_dependency "http", ">= 4.4.0", "< 6.0.0"
+  spec.add_runtime_dependency "http", ">= 4.4.0", "< 7.0.0"
   spec.add_runtime_dependency "json", "~> 2.3"
 end
diff --git a/lib/ldclient-rb/impl/data_source/requestor.rb b/lib/ldclient-rb/impl/data_source/requestor.rb
index 9bf81417..f1e714f5 100644
--- a/lib/ldclient-rb/impl/data_source/requestor.rb
+++ b/lib/ldclient-rb/impl/data_source/requestor.rb
@@ -64,9 +64,7 @@ def make_request(path)
           unless cached.nil?
             headers["If-None-Match"] = cached.etag
           end
-          response = @http_client.request("GET", uri, {
-            headers: headers,
-          })
+          response = @http_client.request("GET", uri, headers: headers)
           status = response.status.code
           # must fully read body for persistent connections
           body = response.to_s
diff --git a/lib/ldclient-rb/impl/event_sender.rb b/lib/ldclient-rb/impl/event_sender.rb
index 660c7df7..f98703d4 100644
--- a/lib/ldclient-rb/impl/event_sender.rb
+++ b/lib/ldclient-rb/impl/event_sender.rb
@@ -67,10 +67,7 @@ def send_event_data(event_data, description, is_diagnostic)
                 body = gzip.close.string
               end
 
-              response = http_client.request("POST", uri, {
-                headers: headers,
-                body: body,
-              })
+              response = http_client.request("POST", uri, headers: headers, body: body)
             rescue StandardError => exn
               @logger.warn { "[LDClient] Error sending events: #{exn.inspect}." }
               next
diff --git a/lib/ldclient-rb/impl/util.rb b/lib/ldclient-rb/impl/util.rb
index 48dc33a1..6748295a 100644
--- a/lib/ldclient-rb/impl/util.rb
+++ b/lib/ldclient-rb/impl/util.rb
@@ -127,22 +127,22 @@ def self.add_payload_filter_key(uri, config)
       def self.new_http_client(http_config)
         http_client_options = {}
         if http_config.socket_factory
-          http_client_options["socket_class"] = http_config.socket_factory
+          http_client_options[:socket_class] = http_config.socket_factory
         end
         proxy = URI.parse(http_config.base_uri).find_proxy
         unless proxy.nil?
-          http_client_options["proxy"] = {
+          http_client_options[:proxy] = {
             proxy_address: proxy.host,
             proxy_port: proxy.port,
             proxy_username: proxy.user,
             proxy_password: proxy.password,
           }
         end
-        HTTP::Client.new(http_client_options)
-          .timeout({
+        HTTP::Client.new(**http_client_options)
+          .timeout(
             read: http_config.read_timeout,
-            connect: http_config.connect_timeout,
-          })
+            connect: http_config.connect_timeout
+          )
           .persistent(http_config.base_uri)
       end