diff --git a/lib/php/Makefile.am b/lib/php/Makefile.am
index 3851294..ece8d24 100644
--- a/lib/php/Makefile.am
+++ b/lib/php/Makefile.am
@@ -150,6 +150,7 @@
 	src/TStringUtils.php \
 	coding_standards.md \
 	thrift_protocol.ini \
+	phpunit.xml \
 	README.apache.md \
 	README.md \
 	test