diff --git a/cabal.project b/cabal.project
new file mode 100644
index 0000000..b019686
--- /dev/null
+++ b/cabal.project
@@ -0,0 +1,5 @@
+source-repository-package
+  type: git
+  location: https://github.com/jaspervdj/urlencoded.git
+
+packages: ./zureg.cabal
diff --git a/flake.nix b/flake.nix
index e04ac73..c003d33 100644
--- a/flake.nix
+++ b/flake.nix
@@ -10,7 +10,7 @@
     inputs.flake-utils.lib.eachDefaultSystem (system:
       let
         pkgs = inputs.nixpkgs.legacyPackages.${system};
-        haskell = pkgs.haskell.packages.ghc94;
+        haskell = pkgs.haskell.packages.ghc96;
       in {
         packages = { default = haskell.callCabal2nix "zureg" ./. { }; };
         devShells = {
diff --git a/lib/Zureg/Database/Migrations/01-init.sql b/lib/Zureg/Database/Migrations/01-init.sql
index 902731b..2ce954f 100644
--- a/lib/Zureg/Database/Migrations/01-init.sql
+++ b/lib/Zureg/Database/Migrations/01-init.sql
@@ -1,10 +1,66 @@
+CREATE TABLE tshirt_sizes (
+    tshirt_size TEXT NOT NULL PRIMARY KEY
+);
+
+INSERT INTO tshirt_sizes (tshirt_size) VALUES ('XS');
+INSERT INTO tshirt_sizes (tshirt_size) VALUES ('S');
+INSERT INTO tshirt_sizes (tshirt_size) VALUES ('M');
+INSERT INTO tshirt_sizes (tshirt_size) VALUES ('L');
+INSERT INTO tshirt_sizes (tshirt_size) VALUES ('XL');
+INSERT INTO tshirt_sizes (tshirt_size) VALUES ('XXL');
+
+CREATE TABLE regions (
+    region TEXT NOT NULL PRIMARY KEY
+);
+
+INSERT INTO regions (region) VALUES ('Switzerland');
+INSERT INTO regions (region) VALUES ('Europe');
+INSERT INTO regions (region) VALUES ('Africa');
+INSERT INTO regions (region) VALUES ('AmericaCentral');
+INSERT INTO regions (region) VALUES ('AmericaNorth');
+INSERT INTO regions (region) VALUES ('AmericaSouth');
+INSERT INTO regions (region) VALUES ('Asia');
+INSERT INTO regions (region) VALUES ('MiddleEast');
+INSERT INTO regions (region) VALUES ('Oceania');
+
+CREATE TABLE occupations (
+    occupation TEXT NOT NULL PRIMARY KEY
+);
+
+INSERT INTO occupations (occupation) VALUES ('Student');
+INSERT INTO occupations (occupation) VALUES ('Tech');
+INSERT INTO occupations (occupation) VALUES ('Academia');
+INSERT INTO occupations (occupation) VALUES ('Other');
+
 CREATE TABLE registrants (
     id UUID NOT NULL PRIMARY KEY DEFAULT GEN_RANDOM_UUID(),
     email TEXT NOT NULL,
     name TEXT NOT NULL,
     badge_name TEXT,
     affiliation TEXT,
-    registered_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+    registered_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    tshirt_size TEXT,
+    CONSTRAINT tshirt_size_fk FOREIGN KEY (tshirt_size)
+        REFERENCES tshirt_sizes (tshirt_size),
+    region TEXT,
+    CONSTRAINT region_fk FOREIGN KEY (region) REFERENCES regions (region),
+    occupation TEXT,
+    CONSTRAINT registrants_occupation_fk FOREIGN KEY (occupation)
+        REFERENCES occupations (occupation),
+    beginner_track_interest BOOLEAN NOT NULL
 );
 
 CREATE UNIQUE INDEX registrants_email_idx ON registrants (email);
+
+CREATE TABLE projects (
+    id UUID NOT NULL PRIMARY KEY DEFAULT GEN_RANDOM_UUID(),
+    name TEXT NOT NULL,
+    link TEXT,
+    short_description TEXT,
+    contributor_level_beginner BOOLEAN NOT NULL,
+    contributor_level_intermediate BOOLEAN NOT NULL,
+    contributor_level_advanced BOOLEAN NOT NULL,
+    registrant_id UUID NOT NULL,
+    CONSTRAINT registrant_id_fk FOREIGN KEY (registrant_id)
+        REFERENCES registrants (id)
+);