diff --git a/models/sources/exposures.sql b/models/sources/exposures.sql
index 9b6e48b3..34edb8d5 100644
--- a/models/sources/exposures.sql
+++ b/models/sources/exposures.sql
@@ -1,3 +1,9 @@
+{{
+    config(
+        materialized='incremental',
+        on_schema_change='append_new_columns'
+    )
+}}
 /* Bigquery won't let us `where` without `from` so we use this workaround */
 with dummy_cte as (
     select 1 as foo
diff --git a/models/sources/invocations.sql b/models/sources/invocations.sql
index 7cdabf94..c176c898 100644
--- a/models/sources/invocations.sql
+++ b/models/sources/invocations.sql
@@ -1,3 +1,9 @@
+{{
+    config(
+        materialized='incremental',
+        on_schema_change='append_new_columns'
+    )
+}}
 /* Bigquery won't let us `where` without `from` so we use this workaround */
 with dummy_cte as (
     select 1 as foo
diff --git a/models/sources/model_executions.sql b/models/sources/model_executions.sql
index 09bec105..9347470e 100644
--- a/models/sources/model_executions.sql
+++ b/models/sources/model_executions.sql
@@ -1,3 +1,9 @@
+{{
+    config(
+        materialized='incremental',
+        on_schema_change='append_new_columns'
+    )
+}}
 /* Bigquery won't let us `where` without `from` so we use this workaround */
 with dummy_cte as (
     select 1 as foo
diff --git a/models/sources/models.sql b/models/sources/models.sql
index f4ec8f01..5ab25e4e 100644
--- a/models/sources/models.sql
+++ b/models/sources/models.sql
@@ -1,3 +1,9 @@
+{{
+    config(
+        materialized='incremental',
+        on_schema_change='append_new_columns'
+    )
+}}
 /* Bigquery won't let us `where` without `from` so we use this workaround */
 with dummy_cte as (
     select 1 as foo
diff --git a/models/sources/seed_executions.sql b/models/sources/seed_executions.sql
index dbb93977..78766d0e 100644
--- a/models/sources/seed_executions.sql
+++ b/models/sources/seed_executions.sql
@@ -1,3 +1,9 @@
+{{
+    config(
+        materialized='incremental',
+        on_schema_change='append_new_columns'
+    )
+}}
 /* Bigquery won't let us `where` without `from` so we use this workaround */
 with dummy_cte as (
     select 1 as foo
diff --git a/models/sources/seeds.sql b/models/sources/seeds.sql
index 7c52ecf7..4be82135 100644
--- a/models/sources/seeds.sql
+++ b/models/sources/seeds.sql
@@ -1,3 +1,9 @@
+{{
+    config(
+        materialized='incremental',
+        on_schema_change='append_new_columns'
+    )
+}}
 /* Bigquery won't let us `where` without `from` so we use this workaround */
 with dummy_cte as (
     select 1 as foo
diff --git a/models/sources/snapshot_executions.sql b/models/sources/snapshot_executions.sql
index dbb93977..78766d0e 100644
--- a/models/sources/snapshot_executions.sql
+++ b/models/sources/snapshot_executions.sql
@@ -1,3 +1,9 @@
+{{
+    config(
+        materialized='incremental',
+        on_schema_change='append_new_columns'
+    )
+}}
 /* Bigquery won't let us `where` without `from` so we use this workaround */
 with dummy_cte as (
     select 1 as foo
diff --git a/models/sources/snapshots.sql b/models/sources/snapshots.sql
index e7832de6..a568cd6e 100644
--- a/models/sources/snapshots.sql
+++ b/models/sources/snapshots.sql
@@ -1,3 +1,9 @@
+{{
+    config(
+        materialized='incremental',
+        on_schema_change='append_new_columns'
+    )
+}}
 /* Bigquery won't let us `where` without `from` so we use this workaround */
 with dummy_cte as (
     select 1 as foo
diff --git a/models/sources/sources.sql b/models/sources/sources.sql
index ad08f0d7..75701816 100644
--- a/models/sources/sources.sql
+++ b/models/sources/sources.sql
@@ -1,3 +1,9 @@
+{{
+    config(
+        materialized='incremental',
+        on_schema_change='append_new_columns'
+    )
+}}
 /* Bigquery won't let us `where` without `from` so we use this workaround */
 with dummy_cte as (
     select 1 as foo
diff --git a/models/sources/test_executions.sql b/models/sources/test_executions.sql
index 50d37980..061cb90c 100644
--- a/models/sources/test_executions.sql
+++ b/models/sources/test_executions.sql
@@ -1,3 +1,9 @@
+{{
+    config(
+        materialized='incremental',
+        on_schema_change='append_new_columns'
+    )
+}}
 /* Bigquery won't let us `where` without `from` so we use this workaround */
 with dummy_cte as (
     select 1 as foo
diff --git a/models/sources/tests.sql b/models/sources/tests.sql
index 1a4b5d9d..f6695bc7 100644
--- a/models/sources/tests.sql
+++ b/models/sources/tests.sql
@@ -1,3 +1,9 @@
+{{
+    config(
+        materialized='incremental',
+        on_schema_change='append_new_columns'
+    )
+}}
 /* Bigquery won't let us `where` without `from` so we use this workaround */
 with dummy_cte as (
     select 1 as foo