diff --git a/backend/src/appointment/migrations/versions/2026_02_23_1200-a1b2c3d4e5f6_add_google_calendar_channels_.py b/backend/src/appointment/migrations/versions/2026_02_23_1200-a1b2c3d4e5f6_add_google_calendar_channels_.py
index b022b53f7..6b0474feb 100644
--- a/backend/src/appointment/migrations/versions/2026_02_23_1200-a1b2c3d4e5f6_add_google_calendar_channels_.py
+++ b/backend/src/appointment/migrations/versions/2026_02_23_1200-a1b2c3d4e5f6_add_google_calendar_channels_.py
@@ -26,6 +26,8 @@ def upgrade() -> None:
         sa.Column('resource_id', sa.String),
         sa.Column('expiration', sa.DateTime),
         sa.Column('sync_token', sa.String, nullable=True),
+        sa.Column('time_created', sa.DateTime, server_default=sa.func.now(), index=True),
+        sa.Column('time_updated', sa.DateTime, server_default=sa.func.now(), index=True),
     )
 
 
diff --git a/backend/src/appointment/migrations/versions/2026_04_01_1200-b3c4d5e6f7a8_add_state_to_google_calendar_.py b/backend/src/appointment/migrations/versions/2026_04_01_1200-b3c4d5e6f7a8_add_state_to_google_calendar_.py
index 02b61b529..0ea818173 100644
--- a/backend/src/appointment/migrations/versions/2026_04_01_1200-b3c4d5e6f7a8_add_state_to_google_calendar_.py
+++ b/backend/src/appointment/migrations/versions/2026_04_01_1200-b3c4d5e6f7a8_add_state_to_google_calendar_.py
@@ -15,7 +15,7 @@
 revision = 'b3c4d5e6f7a8'
 down_revision = 'd9c5594694c5'
 branch_labels = None
-depends_on = None
+depends_on = ('a1b2c3d4e5f6',)
 
 
 def upgrade() -> None:
diff --git a/backend/src/appointment/migrations/versions/2026_04_28_1950-c7a1b2d3e4f5_add_timestamps_to_google_.py b/backend/src/appointment/migrations/versions/2026_04_28_1950-c7a1b2d3e4f5_add_timestamps_to_google_.py
new file mode 100644
index 000000000..45ab1f2a6
--- /dev/null
+++ b/backend/src/appointment/migrations/versions/2026_04_28_1950-c7a1b2d3e4f5_add_timestamps_to_google_.py
@@ -0,0 +1,43 @@
+"""add timestamps to google_calendar_channels
+
+Revision ID: c7a1b2d3e4f5
+Revises: 04f5df8311e9
+Create Date: 2026-04-28 19:50:00.000000
+
+"""
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy import func, inspect
+
+
+# revision identifiers, used by Alembic.
+revision = 'c7a1b2d3e4f5'
+down_revision = '04f5df8311e9'
+branch_labels = None
+depends_on = None
+
+
+def _column_exists(connection, table, column) -> bool:
+    insp = inspect(connection)
+    cols = [c['name'] for c in insp.get_columns(table)]
+    return column in cols
+
+
+def upgrade() -> None:
+    conn = op.get_bind()
+    if not _column_exists(conn, 'google_calendar_channels', 'time_created'):
+        op.add_column(
+            'google_calendar_channels',
+            sa.Column('time_created', sa.DateTime, server_default=func.now(), index=True),
+        )
+    if not _column_exists(conn, 'google_calendar_channels', 'time_updated'):
+        op.add_column(
+            'google_calendar_channels',
+            sa.Column('time_updated', sa.DateTime, server_default=func.now(), index=True),
+        )
+
+
+def downgrade() -> None:
+    op.drop_column('google_calendar_channels', 'time_updated')
+    op.drop_column('google_calendar_channels', 'time_created')