diff --git a/resources/sql/autopatches/20170404.files.retroactive-content-hash.sql b/resources/sql/autopatches/20170404.files.retroactive-content-hash.sql
new file mode 100644
--- /dev/null
+++ b/resources/sql/autopatches/20170404.files.retroactive-content-hash.sql
@@ -0,0 +1,2 @@
+ALTER TABLE {$NAMESPACE}_file.file
+  CHANGE contentHash contentHash BINARY(64);