diff --git a/.circleci/config.yml b/.circleci/config.yml
index 9d49e628..cea9eb79 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -265,10 +265,11 @@ workflows:
                 - "3.2"
                 - "3.3"
                 - "3.4"
+                - "3.5.0-preview1"
   libraries_ruby_31_32:
     jobs:
       - test_apprisal:
-          name: "test_apprisal-ruby-<<matrix.stack>>-<<matrix.ruby_version>>-<<matrix.gemfile>>"
+          name: "test_apprisal-<<matrix.gemfile>>-ruby-<<matrix.stack>>-<<matrix.ruby_version>>"
           matrix:
             parameters:
               stack:
@@ -277,10 +278,10 @@ workflows:
               ruby_version:
                 - "3.1"
                 - "3.2"
-  libraries_ruby_33_34:
+  libraries_ruby_33_35:
     jobs:
       - test_apprisal:
-          name: "test_apprisal-ruby-<<matrix.stack>>-<<matrix.ruby_version>>-<<matrix.gemfile>>"
+          name: "test_apprisal-<<matrix.gemfile>>-ruby-<<matrix.stack>>-<<matrix.ruby_version>>"
           matrix:
             parameters:
               stack:
@@ -289,6 +290,7 @@ workflows:
               ruby_version:
                 - "3.3"
                 - "3.4"
+                - "3.5.0-preview1"
             # Currently compiling the native extensions for `grpc`
             # exceeds an internal RAM and/or CPU limit of CircleCI executor,
             # and the job gets terminated with:
@@ -298,11 +300,12 @@ workflows:
             # on https://rubygems.org/gems/grpc/versions
             exclude:
             - stack: base
+              ruby_version: "3.5.0-preview1"
               gemfile: "./gemfiles/grpc_10.gemfile"
-  rails_ruby_31_34:
+  rails_ruby_31_35:
     jobs:
       - test_apprisal:
-          name: "test_apprisal-rails-ruby-<<matrix.stack>>-<<matrix.ruby_version>>-<<matrix.gemfile>>"
+          name: "test_apprisal-rails-<<matrix.gemfile>>-ruby-<<matrix.stack>>-<<matrix.ruby_version>>"
           matrix:
             parameters:
               stack:
@@ -317,11 +320,12 @@ workflows:
                 - "3.1"
                 - "3.2"
                 - "3.3"
-                - "3.4"             
-  rails8_ruby_33_34:
+                - "3.4"
+                - "3.5.0-preview1"             
+  rails8_ruby_33_35:
     jobs:
       - test_apprisal:
-          name: "test_apprisal-rails-8-ruby-<<matrix.stack>>-<<matrix.ruby_version>>-<<matrix.gemfile>>"
+          name: "test_apprisal-rails-8-<<matrix.gemfile>>-ruby-<<matrix.stack>>-<<matrix.ruby_version>>"
           matrix:
             parameters:
               stack:
@@ -337,7 +341,7 @@ workflows:
   sequel:
       jobs:
       - test_apprisal:
-          name: "test_apprisal-rails-8-ruby-<<matrix.stack>>-<<matrix.ruby_version>>-<<matrix.gemfile>>"
+          name: "test_apprisal-sequel-<<matrix.gemfile>>-ruby-<<matrix.stack>>-<<matrix.ruby_version>>"
           matrix:
             parameters:
               stack:
@@ -351,7 +355,7 @@ workflows:
                 - "3.1"
                 - "3.2"
                 - "3.3"
-                - "3.4"
+                - "3.5.0-preview1"
   report_coverage:
     jobs:
       - report_coverage
diff --git a/instana.gemspec b/instana.gemspec
index 73774fe9..482ffd1e 100644
--- a/instana.gemspec
+++ b/instana.gemspec
@@ -39,8 +39,11 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "minitest", "~> 5.20"
   spec.add_development_dependency "appraisal"
   spec.add_development_dependency "fakefs"
+  spec.add_development_dependency "irb"
+  spec.add_development_dependency "benchmark"
 
   spec.add_runtime_dependency('base64', '>= 0.1')
+  spec.add_runtime_dependency('logger')
   spec.add_runtime_dependency('concurrent-ruby', '>= 1.1')
   spec.add_runtime_dependency('csv', '>= 0.1')
   spec.add_runtime_dependency('sys-proctable', '>= 1.2.2')