diff --git a/gso/migrations/versions/2025-05-02_465008ed496e_update_ias_flavor_names.py b/gso/migrations/versions/2025-05-02_465008ed496e_update_ias_flavor_names.py
new file mode 100644
index 0000000000000000000000000000000000000000..7838e269e5f0e0eee1320ffdeb4e39044c6c077e
--- /dev/null
+++ b/gso/migrations/versions/2025-05-02_465008ed496e_update_ias_flavor_names.py
@@ -0,0 +1,44 @@
+"""Update IAS flavor names.
+
+Revision ID: 465008ed496e
+Revises: a3177c5f9641
+Create Date: 2025-05-02 13:54:40.520906
+
+"""
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = '465008ed496e'
+down_revision = 'a3177c5f9641'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    conn = op.get_bind()
+    conn.execute(sa.text("""
+UPDATE subscription_instance_values
+SET value = 'IASPS_OPTOUT'
+WHERE value = 'IASPS Opt-OUT'
+    """))
+    conn.execute(sa.text("""
+UPDATE subscription_instance_values
+SET value = 'IASPS_OPTIN'
+WHERE value = 'IASPS  Opt-IN'
+    """))
+
+
+def downgrade() -> None:
+    conn = op.get_bind()
+    conn.execute(sa.text("""
+UPDATE subscription_instance_values
+SET value = 'IASPS  Opt-IN'
+WHERE value = 'IASPS_OPTIN'
+    """))
+    conn.execute(sa.text("""
+UPDATE subscription_instance_values
+SET value = 'IASPS Opt-OUT'
+WHERE value = 'IASPS_OPTOUT'
+    """))
+
diff --git a/gso/products/product_blocks/ias.py b/gso/products/product_blocks/ias.py
index f57d76fcb8541369b0381e24f09f0caaa2790090..3584420aa78f728a88de2b20c01b64f10b2e2224 100644
--- a/gso/products/product_blocks/ias.py
+++ b/gso/products/product_blocks/ias.py
@@ -14,8 +14,8 @@ from gso.products.product_blocks.l3_core_service import (
 class IASFlavor(strEnum):
     """IAS flavors."""
 
-    IAS_PS_OPT_OUT = "IASPS Opt-OUT"
-    IAS_PS_OPT_IN = "IASPS  Opt-IN"
+    IAS_PS_OPT_OUT = "IASPS_OPTOUT"
+    IAS_PS_OPT_IN = "IASPS_OPTIN"
     IASGWS = "IASGWS"