diff --git a/Makefile.am b/Makefile.am
index 8cf5473e2..573003b90 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1427,7 +1427,8 @@ EXTRA_DIST = $(@DIST_LANG@_EXTRA_DIST)   \
   third_party/zlib.BUILD                 \
   third_party/wyhash/LICENSE             \
   third_party/wyhash/wyhash.h            \
-  util/python/BUILD
+  util/python/BUILD                      \
+  internal.bzl
 
 
 # Deletes all the files generated by autogen.sh.