diff --git a/migrations/2018-04-08-182319_add_authors/down.sql b/migrations/2018-04-08-182319_add_authors/down.sql
new file mode 100644
index 000000000..8ad817908
--- /dev/null
+++ b/migrations/2018-04-08-182319_add_authors/down.sql
@@ -0,0 +1,5 @@
+ALTER TABLE threads DROP COLUMN author_name;
+ALTER TABLE threads DROP COLUMN author_email;
+
+ALTER TABLE posts DROP COLUMN author_name;
+ALTER TABLE posts DROP COLUMN author_email;
diff --git a/migrations/2018-04-08-182319_add_authors/up.sql b/migrations/2018-04-08-182319_add_authors/up.sql
new file mode 100644
index 000000000..ad5beb9f6
--- /dev/null
+++ b/migrations/2018-04-08-182319_add_authors/up.sql
@@ -0,0 +1,10 @@
+-- This migration adds an 'author' column to the thread & post table.
+-- Authors don't currently exist as independent objects in the
+-- database as most user management is simply delegated to the OIDC
+-- provider.
+
+ALTER TABLE threads ADD COLUMN author_name VARCHAR NOT NULL DEFAULT 'anonymous';
+ALTER TABLE threads ADD COLUMN author_email VARCHAR NOT NULL DEFAULT 'unknown@example.org';
+
+ALTER TABLE posts ADD COLUMN author_name VARCHAR NOT NULL DEFAULT 'anonymous';
+ALTER TABLE posts ADD COLUMN author_email VARCHAR NOT NULL DEFAULT 'unknown@example.org';