diff --git a/internal/db/migrations/1751016438_allow-null-contribution-id.down.sql b/internal/db/migrations/1751016438_allow-null-contribution-id.down.sql
new file mode 100644
index 0000000..f5b7718
--- /dev/null
+++ b/internal/db/migrations/1751016438_allow-null-contribution-id.down.sql
@@ -0,0 +1,6 @@
+UPDATE transactions
+SET contribution_id = 0 
+WHERE contribution_id IS NULL;
+
+ALTER TABLE transactions
+ALTER COLUMN contribution_id SET NOT NULL;
\ No newline at end of file
diff --git a/internal/db/migrations/1751016438_allow-null-contribution-id.up.sql b/internal/db/migrations/1751016438_allow-null-contribution-id.up.sql
new file mode 100644
index 0000000..8f9e5d0
--- /dev/null
+++ b/internal/db/migrations/1751016438_allow-null-contribution-id.up.sql
@@ -0,0 +1,2 @@
+ALTER TABLE transactions
+ALTER COLUMN contribution_id DROP NOT NULL;