diff --git a/mypy2junit.py b/mypy2junit.py
index b00f29c..c2a06ef 100644
--- a/mypy2junit.py
+++ b/mypy2junit.py
@@ -13,6 +13,7 @@
 REPLACES = {
     ord('<'): '&lt;',
     ord('"'): '&quot;',
+    ord('&'): '&amp;',
 }