diff --git a/packages/database/prisma/schema/migrations/20250714214908_alt_agl_optional/migration.sql b/packages/database/prisma/schema/migrations/20250714214908_alt_agl_optional/migration.sql
new file mode 100644
index 00000000..335f8bd6
--- /dev/null
+++ b/packages/database/prisma/schema/migrations/20250714214908_alt_agl_optional/migration.sql
@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "PositionLog" ALTER COLUMN "altAGL" DROP NOT NULL;
diff --git a/packages/database/prisma/schema/positionLog.prisma b/packages/database/prisma/schema/positionLog.prisma
index caf3f5b4..b190c495 100644
--- a/packages/database/prisma/schema/positionLog.prisma
+++ b/packages/database/prisma/schema/positionLog.prisma
@@ -6,7 +6,7 @@ model PositionLog {
     lat                 Float
     lng                 Float
     alt                 Int
-    altAGL              Int
+    altAGL              Int?
     speed               Int
     heading             Int
     timestamp           DateTime          @default(now())