diff --git a/.gitignore b/.gitignore
index bf37ce08333..7cef88986a8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,3 +27,6 @@ csharp/extractor/Semmle.Extraction.CSharp.Driver/Properties/launchSettings.json
 
 # Avoid committing cached package components
 .codeql
+
+# Compiled class file
+*.class
\ No newline at end of file