diff --git a/global-api/migrations/versions/949c5b9cc18d_ef_in_country_code_table.py b/global-api/migrations/versions/949c5b9cc18d_ef_in_country_code_table.py
new file mode 100644
index 000000000..0dfcbf6cd
--- /dev/null
+++ b/global-api/migrations/versions/949c5b9cc18d_ef_in_country_code_table.py
@@ -0,0 +1,28 @@
+"""EF_in_country_code_table
+
+Revision ID: 949c5b9cc18d
+Revises: 583858ff1aa8
+Create Date: 2024-04-03 10:24:31.131245
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '949c5b9cc18d'
+down_revision: Union[str, None] = '583858ff1aa8'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.alter_column("country_code", "emission_factor_value", nullable=True, type_=sa.Float)
+    op.alter_column("country_code", "emission_factor_units", nullable=True, type_=sa.String)
+
+
+def downgrade() -> None:
+    op.drop_column("country_code", "emission_factor_value", nullable=False, type_=sa.Float)
+    op.drop_column("country_code", "emission_factor_units", nullable=False, type_=sa.String)