diff --git a/php/ext/google/protobuf/package.xml b/php/ext/google/protobuf/package.xml
index 4f0b8b4277482..367bde0246b16 100644
--- a/php/ext/google/protobuf/package.xml
+++ b/php/ext/google/protobuf/package.xml
@@ -43,6 +43,7 @@
     <file baseinstalldir="/" name="names.h" role="src"/>
     <file baseinstalldir="/" name="php-upb.c" role="src"/>
     <file baseinstalldir="/" name="php-upb.h" role="src"/>
+    <file baseinstalldir="/" name="php_protobuf.h" role="src"/>
     <file baseinstalldir="/" name="protobuf.c" role="src"/>
     <file baseinstalldir="/" name="protobuf.h" role="src"/>
     <file baseinstalldir="/" name="wkt.inc" role="src"/>