diff --git a/.github/workflows/test-compilation.yml b/.github/workflows/test-compilation.yml
index 0c8adbd..505e9c9 100644
--- a/.github/workflows/test-compilation.yml
+++ b/.github/workflows/test-compilation.yml
@@ -12,6 +12,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
+          - { ruby_version: '4.0', corruption: false, expected_exit_code: 0 } # Used by `dd-trace-rb` for compilation
           - { ruby_version: '3.4', corruption: false, expected_exit_code: 0 } # Used by `dd-trace-rb` for compilation
           - { ruby_version: '3.3', corruption: false, expected_exit_code: 0 } # Used by `dd-trace-rb` for compilation
           - { ruby_version: '3.2', corruption: false, expected_exit_code: 0 }
@@ -21,7 +22,9 @@ jobs:
           - { ruby_version: '2.6', corruption: false, expected_exit_code: 0 }
           - { ruby_version: '2.5', corruption: false, expected_exit_code: 0 } # Used by `dd-trace-rb` for compilation
 
-          # Corruption tests
+          # "Corruption" tests: Validate that missing a file really breaks compilation (and thus our tests are working)
+          # On Rubies that don't use the source, this validates that indeed they aren't using any of these files.
+          - { ruby_version: '4.0', corruption: true,  expected_exit_code: 1 } # Used by `dd-trace-rb` for compilation
           - { ruby_version: '3.4', corruption: true,  expected_exit_code: 1 } # Used by `dd-trace-rb` for compilation
           - { ruby_version: '3.3', corruption: true,  expected_exit_code: 1 } # Used by `dd-trace-rb` for compilation
           - { ruby_version: '3.2', corruption: true,  expected_exit_code: 0 }
diff --git a/lib/datadog/ruby_core_source/version.rb b/lib/datadog/ruby_core_source/version.rb
index 05cceb7..1033497 100644
--- a/lib/datadog/ruby_core_source/version.rb
+++ b/lib/datadog/ruby_core_source/version.rb
@@ -1,5 +1,5 @@
 module Datadog
   module RubyCoreSource
-    VERSION = '3.4.1'
+    VERSION = '3.4.2'
   end
 end