diff --git a/.gitignore b/.gitignore
index 2bf8908..3115908 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,3 +19,6 @@ my.html
 /samples_output
 /output
 /benchmarks/output
+
+# dialyzer caching
+/tools
\ No newline at end of file