diff --git a/up/collapse_user_and_admin.sql b/up/collapse_user_and_admin.sql
new file mode 100644
index 000000000..654fa8777
--- /dev/null
+++ b/up/collapse_user_and_admin.sql
@@ -0,0 +1,4 @@
+-- make your life easy and use this name for your encrypted password 
+ALTER TABLE users RENAME COLUMN password_digest TO encrypted_password;
+
+DROP TABLE admin_users;
diff --git a/up/default_gender_to_null.sql b/up/default_gender_to_null.sql
new file mode 100644
index 000000000..6c2f1ab35
--- /dev/null
+++ b/up/default_gender_to_null.sql
@@ -0,0 +1 @@
+ALTER TABLE users ALTER gender DROP DEFAULT;
diff --git a/up/invited_users.sql b/up/invited_users.sql
new file mode 100644
index 000000000..e691c1903
--- /dev/null
+++ b/up/invited_users.sql
@@ -0,0 +1,12 @@
+-- a table to manage invitations from one user to another
+CREATE TABLE invited_users (
+    id VARCHAR(64) PRIMARY KEY DEFAULT uuid_generate_v4(),
+    sender_id VARCHAR(64) REFERENCES users(id) ON DELETE CASCADE,
+    autofriend BOOLEAN NOT NULL,
+    email VARCHAR(256) NOT NULL,
+    invitation_code VARCHAR(256) UNIQUE NOT NULL,
+    accepted BOOLEAN DEFAULT FALSE,
+    note text,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP 
+);
diff --git a/up/subscribe_email.sql b/up/subscribe_email.sql
new file mode 100644
index 000000000..b97cde88a
--- /dev/null
+++ b/up/subscribe_email.sql
@@ -0,0 +1 @@
+ALTER TABLE users ADD COLUMN subscribe_email BOOLEAN DEFAULT false;