diff --git a/backend/db/migrations/0022_task_dependencies.sql b/backend/db/migrations/0022_task_dependencies.sql
new file mode 100644
index 0000000..26b3156
--- /dev/null
+++ b/backend/db/migrations/0022_task_dependencies.sql
@@ -0,0 +1,2 @@
+ALTER TABLE "tasks"
+ADD COLUMN "dependency_ids" jsonb NOT NULL DEFAULT '[]'::jsonb;
diff --git a/backend/db/migrations/0023_tax_evaluation_period.sql b/backend/db/migrations/0023_tax_evaluation_period.sql
new file mode 100644
index 0000000..048c6ab
--- /dev/null
+++ b/backend/db/migrations/0023_tax_evaluation_period.sql
@@ -0,0 +1,2 @@
+ALTER TABLE "tenants"
+ADD COLUMN "taxEvaluationPeriod" text DEFAULT 'monthly' NOT NULL;
diff --git a/backend/db/migrations/meta/_journal.json b/backend/db/migrations/meta/_journal.json
index 0b58561..e33c113 100644
--- a/backend/db/migrations/meta/_journal.json
+++ b/backend/db/migrations/meta/_journal.json
@@ -148,6 +148,20 @@
       "when": 1773835200000,
       "tag": "0021_admin_user_flag",
       "breakpoints": true
+    },
+    {
+      "idx": 21,
+      "version": "7",
+      "when": 1773925200000,
+      "tag": "0022_task_dependencies",
+      "breakpoints": true
+    },
+    {
+      "idx": 22,
+      "version": "7",
+      "when": 1774080000000,
+      "tag": "0023_tax_evaluation_period",
+      "breakpoints": true
     }
   ]
 }