diff --git a/ql/src/queries/diagnostics/SuccessfullyExtractedFiles.ql b/ql/src/queries/diagnostics/SuccessfullyExtractedFiles.ql
new file mode 100644
index 00000000000..f7c3bbd14af
--- /dev/null
+++ b/ql/src/queries/diagnostics/SuccessfullyExtractedFiles.ql
@@ -0,0 +1,14 @@
+/**
+ * @name Successfully extracted files
+ * @description Lists all files that were extracted without encountering an
+ *   error in the file.
+ * @kind diagnostic
+ * @id rb/diagnostics/successfully-extracted-files
+ */
+
+import ruby
+import codeql_ruby.Diagnostics
+
+from File f
+where not exists(ExtractionError e | e.getLocation().getFile() = f)
+select f, ""